257040

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{17}}^1$

素因数の和:46

約数の個数: 160

約数和(自身を含む): 1071360

約数和(自身を除く): 814320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17, 18, 20, 21, 24, 27, 28, 30, 34, 35, 36, 40, 42, 45, 48, 51, 54, 56, 60, 63, 68, 70, 72, 80, 84, 85, 90, 102, 105, 108, 112, 119, 120, 126, 135, 136, 140, 144, 153, 168, 170, 180, 189, 204, 210, 216, 238, 240, 252, 255, 270, 272, 280, 306, 315, 336, 340, 357, 360, 378, 408, 420, 432, 459, 476, 504, 510, 540, 560, 595, 612, 630, 680, 714, 720, 756, 765, 816, 840, 918, 945, 952, 1008, 1020, 1071, 1080, 1190, 1224, 1260, 1360, 1428, 1512, 1530, 1680, 1785, 1836, 1890, 1904, 2040, 2142, 2160, 2295, 2380, 2448, 2520, 2856, 3024, 3060, 3213, 3570, 3672, 3780, 4080, 4284, 4590, 4760, 5040, 5355, 5712, 6120, 6426, 7140, 7344, 7560, 8568, 9180, 9520, 10710, 12240, 12852, 14280, 15120, 16065, 17136, 18360, 21420, 25704, 28560, 32130, 36720, 42840, 51408, 64260, 85680, 128520, 257040]

約数ペア:

[(1, 257040), (2, 128520), (3, 85680), (4, 64260), (5, 51408), (6, 42840), (7, 36720), (8, 32130), (9, 28560), (10, 25704), (12, 21420), (14, 18360), (15, 17136), (16, 16065), (17, 15120), (18, 14280), (20, 12852), (21, 12240), (24, 10710), (27, 9520), (28, 9180), (30, 8568), (34, 7560), (35, 7344), (36, 7140), (40, 6426), (42, 6120), (45, 5712), (48, 5355), (51, 5040), (54, 4760), (56, 4590), (60, 4284), (63, 4080), (68, 3780), (70, 3672), (72, 3570), (80, 3213), (84, 3060), (85, 3024), (90, 2856), (102, 2520), (105, 2448), (108, 2380), (112, 2295), (119, 2160), (120, 2142), (126, 2040), (135, 1904), (136, 1890), (140, 1836), (144, 1785), (153, 1680), (168, 1530), (170, 1512), (180, 1428), (189, 1360), (204, 1260), (210, 1224), (216, 1190), (238, 1080), (240, 1071), (252, 1020), (255, 1008), (270, 952), (272, 945), (280, 918), (306, 840), (315, 816), (336, 765), (340, 756), (357, 720), (360, 714), (378, 680), (408, 630), (420, 612), (432, 595), (459, 560), (476, 540), (504, 510)]