64740640

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:266

約数の個数: 96

約数和(自身を含む): 160030080

約数和(自身を除く): 95289440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 71, 80, 82, 139, 142, 160, 164, 205, 278, 284, 328, 355, 410, 556, 568, 656, 695, 710, 820, 1112, 1136, 1312, 1390, 1420, 1640, 2224, 2272, 2780, 2840, 2911, 3280, 4448, 5560, 5680, 5699, 5822, 6560, 9869, 11120, 11360, 11398, 11644, 14555, 19738, 22240, 22796, 23288, 28495, 29110, 39476, 45592, 46576, 49345, 56990, 58220, 78952, 91184, 93152, 98690, 113980, 116440, 157904, 182368, 197380, 227960, 232880, 315808, 394760, 404629, 455920, 465760, 789520, 809258, 911840, 1579040, 1618516, 2023145, 3237032, 4046290, 6474064, 8092580, 12948128, 16185160, 32370320, 64740640]

約数ペア:

[(1, 64740640), (2, 32370320), (4, 16185160), (5, 12948128), (8, 8092580), (10, 6474064), (16, 4046290), (20, 3237032), (32, 2023145), (40, 1618516), (41, 1579040), (71, 911840), (80, 809258), (82, 789520), (139, 465760), (142, 455920), (160, 404629), (164, 394760), (205, 315808), (278, 232880), (284, 227960), (328, 197380), (355, 182368), (410, 157904), (556, 116440), (568, 113980), (656, 98690), (695, 93152), (710, 91184), (820, 78952), (1112, 58220), (1136, 56990), (1312, 49345), (1390, 46576), (1420, 45592), (1640, 39476), (2224, 29110), (2272, 28495), (2780, 23288), (2840, 22796), (2911, 22240), (3280, 19738), (4448, 14555), (5560, 11644), (5680, 11398), (5699, 11360), (5822, 11120), (6560, 9869)]