80485600

素因数分解:

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

素因数の和:213

約数の個数: 144

約数和(自身を含む): 216548640

約数和(自身を除く): 136063040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 71, 80, 100, 104, 109, 130, 142, 160, 200, 208, 218, 260, 284, 325, 355, 400, 416, 436, 520, 545, 568, 650, 710, 800, 872, 923, 1040, 1090, 1136, 1300, 1417, 1420, 1744, 1775, 1846, 2080, 2180, 2272, 2600, 2725, 2834, 2840, 3488, 3550, 3692, 4360, 4615, 5200, 5450, 5668, 5680, 7085, 7100, 7384, 7739, 8720, 9230, 10400, 10900, 11336, 11360, 14170, 14200, 14768, 15478, 17440, 18460, 21800, 22672, 23075, 28340, 28400, 29536, 30956, 35425, 36920, 38695, 43600, 45344, 46150, 56680, 56800, 61912, 70850, 73840, 77390, 87200, 92300, 100607, 113360, 123824, 141700, 147680, 154780, 184600, 193475, 201214, 226720, 247648, 283400, 309560, 369200, 386950, 402428, 503035, 566800, 619120, 738400, 773900, 804856, 1006070, 1133600, 1238240, 1547800, 1609712, 2012140, 2515175, 3095600, 3219424, 4024280, 5030350, 6191200, 8048560, 10060700, 16097120, 20121400, 40242800, 80485600]

約数ペア:

[(1, 80485600), (2, 40242800), (4, 20121400), (5, 16097120), (8, 10060700), (10, 8048560), (13, 6191200), (16, 5030350), (20, 4024280), (25, 3219424), (26, 3095600), (32, 2515175), (40, 2012140), (50, 1609712), (52, 1547800), (65, 1238240), (71, 1133600), (80, 1006070), (100, 804856), (104, 773900), (109, 738400), (130, 619120), (142, 566800), (160, 503035), (200, 402428), (208, 386950), (218, 369200), (260, 309560), (284, 283400), (325, 247648), (355, 226720), (400, 201214), (416, 193475), (436, 184600), (520, 154780), (545, 147680), (568, 141700), (650, 123824), (710, 113360), (800, 100607), (872, 92300), (923, 87200), (1040, 77390), (1090, 73840), (1136, 70850), (1300, 61912), (1417, 56800), (1420, 56680), (1744, 46150), (1775, 45344), (1846, 43600), (2080, 38695), (2180, 36920), (2272, 35425), (2600, 30956), (2725, 29536), (2834, 28400), (2840, 28340), (3488, 23075), (3550, 22672), (3692, 21800), (4360, 18460), (4615, 17440), (5200, 15478), (5450, 14768), (5668, 14200), (5680, 14170), (7085, 11360), (7100, 11336), (7384, 10900), (7739, 10400), (8720, 9230)]