64388480

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:212

約数の個数: 128

約数和(自身を含む): 169646400

約数和(自身を除く): 105257920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 71, 80, 104, 109, 128, 130, 142, 160, 208, 218, 260, 284, 320, 355, 416, 436, 520, 545, 568, 640, 710, 832, 872, 923, 1040, 1090, 1136, 1417, 1420, 1664, 1744, 1846, 2080, 2180, 2272, 2834, 2840, 3488, 3692, 4160, 4360, 4544, 4615, 5668, 5680, 6976, 7085, 7384, 7739, 8320, 8720, 9088, 9230, 11336, 11360, 13952, 14170, 14768, 15478, 17440, 18460, 22672, 22720, 28340, 29536, 30956, 34880, 36920, 38695, 45344, 45440, 56680, 59072, 61912, 69760, 73840, 77390, 90688, 100607, 113360, 118144, 123824, 147680, 154780, 181376, 201214, 226720, 247648, 295360, 309560, 402428, 453440, 495296, 503035, 590720, 619120, 804856, 906880, 990592, 1006070, 1238240, 1609712, 2012140, 2476480, 3219424, 4024280, 4952960, 6438848, 8048560, 12877696, 16097120, 32194240, 64388480]

約数ペア:

[(1, 64388480), (2, 32194240), (4, 16097120), (5, 12877696), (8, 8048560), (10, 6438848), (13, 4952960), (16, 4024280), (20, 3219424), (26, 2476480), (32, 2012140), (40, 1609712), (52, 1238240), (64, 1006070), (65, 990592), (71, 906880), (80, 804856), (104, 619120), (109, 590720), (128, 503035), (130, 495296), (142, 453440), (160, 402428), (208, 309560), (218, 295360), (260, 247648), (284, 226720), (320, 201214), (355, 181376), (416, 154780), (436, 147680), (520, 123824), (545, 118144), (568, 113360), (640, 100607), (710, 90688), (832, 77390), (872, 73840), (923, 69760), (1040, 61912), (1090, 59072), (1136, 56680), (1417, 45440), (1420, 45344), (1664, 38695), (1744, 36920), (1846, 34880), (2080, 30956), (2180, 29536), (2272, 28340), (2834, 22720), (2840, 22672), (3488, 18460), (3692, 17440), (4160, 15478), (4360, 14768), (4544, 14170), (4615, 13952), (5668, 11360), (5680, 11336), (6976, 9230), (7085, 9088), (7384, 8720), (7739, 8320)]