81701120

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 144

約数和(自身を含む): 211921920

約数和(自身を除く): 130220800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 32, 40, 58, 62, 64, 71, 80, 116, 124, 128, 142, 145, 155, 160, 232, 248, 256, 284, 290, 310, 320, 355, 464, 496, 568, 580, 620, 640, 710, 899, 928, 992, 1136, 1160, 1240, 1280, 1420, 1798, 1856, 1984, 2059, 2201, 2272, 2320, 2480, 2840, 3596, 3712, 3968, 4118, 4402, 4495, 4544, 4640, 4960, 5680, 7192, 7424, 7936, 8236, 8804, 8990, 9088, 9280, 9920, 10295, 11005, 11360, 14384, 16472, 17608, 17980, 18176, 18560, 19840, 20590, 22010, 22720, 28768, 32944, 35216, 35960, 37120, 39680, 41180, 44020, 45440, 57536, 63829, 65888, 70432, 71920, 82360, 88040, 90880, 115072, 127658, 131776, 140864, 143840, 164720, 176080, 230144, 255316, 263552, 281728, 287680, 319145, 329440, 352160, 510632, 527104, 563456, 575360, 638290, 658880, 704320, 1021264, 1150720, 1276580, 1317760, 1408640, 2042528, 2553160, 2635520, 2817280, 4085056, 5106320, 8170112, 10212640, 16340224, 20425280, 40850560, 81701120]

約数ペア:

[(1, 81701120), (2, 40850560), (4, 20425280), (5, 16340224), (8, 10212640), (10, 8170112), (16, 5106320), (20, 4085056), (29, 2817280), (31, 2635520), (32, 2553160), (40, 2042528), (58, 1408640), (62, 1317760), (64, 1276580), (71, 1150720), (80, 1021264), (116, 704320), (124, 658880), (128, 638290), (142, 575360), (145, 563456), (155, 527104), (160, 510632), (232, 352160), (248, 329440), (256, 319145), (284, 287680), (290, 281728), (310, 263552), (320, 255316), (355, 230144), (464, 176080), (496, 164720), (568, 143840), (580, 140864), (620, 131776), (640, 127658), (710, 115072), (899, 90880), (928, 88040), (992, 82360), (1136, 71920), (1160, 70432), (1240, 65888), (1280, 63829), (1420, 57536), (1798, 45440), (1856, 44020), (1984, 41180), (2059, 39680), (2201, 37120), (2272, 35960), (2320, 35216), (2480, 32944), (2840, 28768), (3596, 22720), (3712, 22010), (3968, 20590), (4118, 19840), (4402, 18560), (4495, 18176), (4544, 17980), (4640, 17608), (4960, 16472), (5680, 14384), (7192, 11360), (7424, 11005), (7936, 10295), (8236, 9920), (8804, 9280), (8990, 9088)]