128520

素因数分解:

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

素因数の和:44

約数の個数: 128

約数和(自身を含む): 518400

約数和(自身を除く): 389880

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, 168, 170, 180, 189, 204, 210, 216, 238, 252, 255, 270, 280, 306, 315, 340, 357, 360, 378, 408, 420, 459, 476, 504, 510, 540, 595, 612, 630, 680, 714, 756, 765, 840, 918, 945, 952, 1020, 1071, 1080, 1190, 1224, 1260, 1428, 1512, 1530, 1785, 1836, 1890, 2040, 2142, 2295, 2380, 2520, 2856, 3060, 3213, 3570, 3672, 3780, 4284, 4590, 4760, 5355, 6120, 6426, 7140, 7560, 8568, 9180, 10710, 12852, 14280, 16065, 18360, 21420, 25704, 32130, 42840, 64260, 128520]

約数ペア:

[(1, 128520), (2, 64260), (3, 42840), (4, 32130), (5, 25704), (6, 21420), (7, 18360), (8, 16065), (9, 14280), (10, 12852), (12, 10710), (14, 9180), (15, 8568), (17, 7560), (18, 7140), (20, 6426), (21, 6120), (24, 5355), (27, 4760), (28, 4590), (30, 4284), (34, 3780), (35, 3672), (36, 3570), (40, 3213), (42, 3060), (45, 2856), (51, 2520), (54, 2380), (56, 2295), (60, 2142), (63, 2040), (68, 1890), (70, 1836), (72, 1785), (84, 1530), (85, 1512), (90, 1428), (102, 1260), (105, 1224), (108, 1190), (119, 1080), (120, 1071), (126, 1020), (135, 952), (136, 945), (140, 918), (153, 840), (168, 765), (170, 756), (180, 714), (189, 680), (204, 630), (210, 612), (216, 595), (238, 540), (252, 510), (255, 504), (270, 476), (280, 459), (306, 420), (315, 408), (340, 378), (357, 360)]