20121400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 51559200

約数和(自身を除く): 31437800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 71, 100, 104, 109, 130, 142, 200, 218, 260, 284, 325, 355, 436, 520, 545, 568, 650, 710, 872, 923, 1090, 1300, 1417, 1420, 1775, 1846, 2180, 2600, 2725, 2834, 2840, 3550, 3692, 4360, 4615, 5450, 5668, 7085, 7100, 7384, 7739, 9230, 10900, 11336, 14170, 14200, 15478, 18460, 21800, 23075, 28340, 30956, 35425, 36920, 38695, 46150, 56680, 61912, 70850, 77390, 92300, 100607, 141700, 154780, 184600, 193475, 201214, 283400, 309560, 386950, 402428, 503035, 773900, 804856, 1006070, 1547800, 2012140, 2515175, 4024280, 5030350, 10060700, 20121400]

約数ペア:

[(1, 20121400), (2, 10060700), (4, 5030350), (5, 4024280), (8, 2515175), (10, 2012140), (13, 1547800), (20, 1006070), (25, 804856), (26, 773900), (40, 503035), (50, 402428), (52, 386950), (65, 309560), (71, 283400), (100, 201214), (104, 193475), (109, 184600), (130, 154780), (142, 141700), (200, 100607), (218, 92300), (260, 77390), (284, 70850), (325, 61912), (355, 56680), (436, 46150), (520, 38695), (545, 36920), (568, 35425), (650, 30956), (710, 28340), (872, 23075), (923, 21800), (1090, 18460), (1300, 15478), (1417, 14200), (1420, 14170), (1775, 11336), (1846, 10900), (2180, 9230), (2600, 7739), (2725, 7384), (2834, 7100), (2840, 7085), (3550, 5668), (3692, 5450), (4360, 4615)]