20845600

素因数分解:

$2^5\times 5^2\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:458

約数の個数: 72

約数和(自身を含む): 51746688

約数和(自身を除く): 30901088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 71, 80, 100, 142, 160, 200, 284, 355, 367, 400, 568, 710, 734, 800, 1136, 1420, 1468, 1775, 1835, 2272, 2840, 2936, 3550, 3670, 5680, 5872, 7100, 7340, 9175, 11360, 11744, 14200, 14680, 18350, 26057, 28400, 29360, 36700, 52114, 56800, 58720, 73400, 104228, 130285, 146800, 208456, 260570, 293600, 416912, 521140, 651425, 833824, 1042280, 1302850, 2084560, 2605700, 4169120, 5211400, 10422800, 20845600]

約数ペア:

[(1, 20845600), (2, 10422800), (4, 5211400), (5, 4169120), (8, 2605700), (10, 2084560), (16, 1302850), (20, 1042280), (25, 833824), (32, 651425), (40, 521140), (50, 416912), (71, 293600), (80, 260570), (100, 208456), (142, 146800), (160, 130285), (200, 104228), (284, 73400), (355, 58720), (367, 56800), (400, 52114), (568, 36700), (710, 29360), (734, 28400), (800, 26057), (1136, 18350), (1420, 14680), (1468, 14200), (1775, 11744), (1835, 11360), (2272, 9175), (2840, 7340), (2936, 7100), (3550, 5872), (3670, 5680)]