21462840

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1$

素因数の和:211

約数の個数: 256

約数和(自身を含む): 87091200

約数和(自身を除く): 65628360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 27, 28, 30, 34, 35, 36, 40, 42, 45, 51, 54, 56, 60, 63, 68, 70, 72, 84, 85, 90, 102, 105, 108, 119, 120, 126, 135, 136, 140, 153, 167, 168, 170, 180, 189, 204, 210, 216, 238, 252, 255, 270, 280, 306, 315, 334, 340, 357, 360, 378, 408, 420, 459, 476, 501, 504, 510, 540, 595, 612, 630, 668, 680, 714, 756, 765, 835, 840, 918, 945, 952, 1002, 1020, 1071, 1080, 1169, 1190, 1224, 1260, 1336, 1428, 1503, 1512, 1530, 1670, 1785, 1836, 1890, 2004, 2040, 2142, 2295, 2338, 2380, 2505, 2520, 2839, 2856, 3006, 3060, 3213, 3340, 3507, 3570, 3672, 3780, 4008, 4284, 4509, 4590, 4676, 4760, 5010, 5355, 5678, 5845, 6012, 6120, 6426, 6680, 7014, 7140, 7515, 7560, 8517, 8568, 9018, 9180, 9352, 10020, 10521, 10710, 11356, 11690, 12024, 12852, 14028, 14195, 14280, 15030, 16065, 17034, 17535, 18036, 18360, 19873, 20040, 21042, 21420, 22545, 22712, 23380, 25551, 25704, 28056, 28390, 30060, 31563, 32130, 34068, 35070, 36072, 39746, 42084, 42585, 42840, 45090, 46760, 51102, 52605, 56780, 59619, 60120, 63126, 64260, 68136, 70140, 76653, 79492, 84168, 85170, 90180, 99365, 102204, 105210, 113560, 119238, 126252, 127755, 128520, 140280, 153306, 157815, 158984, 170340, 178857, 180360, 198730, 204408, 210420, 238476, 252504, 255510, 298095, 306612, 315630, 340680, 357714, 383265, 397460, 420840, 476952, 511020, 536571, 596190, 613224, 631260, 715428, 766530, 794920, 894285, 1022040, 1073142, 1192380, 1262520, 1430856, 1533060, 1788570, 2146284, 2384760, 2682855, 3066120, 3577140, 4292568, 5365710, 7154280, 10731420, 21462840]

約数ペア:

[(1, 21462840), (2, 10731420), (3, 7154280), (4, 5365710), (5, 4292568), (6, 3577140), (7, 3066120), (8, 2682855), (9, 2384760), (10, 2146284), (12, 1788570), (14, 1533060), (15, 1430856), (17, 1262520), (18, 1192380), (20, 1073142), (21, 1022040), (24, 894285), (27, 794920), (28, 766530), (30, 715428), (34, 631260), (35, 613224), (36, 596190), (40, 536571), (42, 511020), (45, 476952), (51, 420840), (54, 397460), (56, 383265), (60, 357714), (63, 340680), (68, 315630), (70, 306612), (72, 298095), (84, 255510), (85, 252504), (90, 238476), (102, 210420), (105, 204408), (108, 198730), (119, 180360), (120, 178857), (126, 170340), (135, 158984), (136, 157815), (140, 153306), (153, 140280), (167, 128520), (168, 127755), (170, 126252), (180, 119238), (189, 113560), (204, 105210), (210, 102204), (216, 99365), (238, 90180), (252, 85170), (255, 84168), (270, 79492), (280, 76653), (306, 70140), (315, 68136), (334, 64260), (340, 63126), (357, 60120), (360, 59619), (378, 56780), (408, 52605), (420, 51102), (459, 46760), (476, 45090), (501, 42840), (504, 42585), (510, 42084), (540, 39746), (595, 36072), (612, 35070), (630, 34068), (668, 32130), (680, 31563), (714, 30060), (756, 28390), (765, 28056), (835, 25704), (840, 25551), (918, 23380), (945, 22712), (952, 22545), (1002, 21420), (1020, 21042), (1071, 20040), (1080, 19873), (1169, 18360), (1190, 18036), (1224, 17535), (1260, 17034), (1336, 16065), (1428, 15030), (1503, 14280), (1512, 14195), (1530, 14028), (1670, 12852), (1785, 12024), (1836, 11690), (1890, 11356), (2004, 10710), (2040, 10521), (2142, 10020), (2295, 9352), (2338, 9180), (2380, 9018), (2505, 8568), (2520, 8517), (2839, 7560), (2856, 7515), (3006, 7140), (3060, 7014), (3213, 6680), (3340, 6426), (3507, 6120), (3570, 6012), (3672, 5845), (3780, 5678), (4008, 5355), (4284, 5010), (4509, 4760), (4590, 4676)]