20297750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^3\times {\mathrm{61}}^1$

素因数の和:111

約数の個数: 64

約数和(自身を含む): 42479424

約数和(自身を除く): 22181674

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 61, 110, 121, 122, 125, 242, 250, 275, 305, 550, 605, 610, 671, 1210, 1331, 1342, 1375, 1525, 2662, 2750, 3025, 3050, 3355, 6050, 6655, 6710, 7381, 7625, 13310, 14762, 15125, 15250, 16775, 30250, 33275, 33550, 36905, 66550, 73810, 81191, 83875, 162382, 166375, 167750, 184525, 332750, 369050, 405955, 811910, 922625, 1845250, 2029775, 4059550, 10148875, 20297750]

約数ペア:

[(1, 20297750), (2, 10148875), (5, 4059550), (10, 2029775), (11, 1845250), (22, 922625), (25, 811910), (50, 405955), (55, 369050), (61, 332750), (110, 184525), (121, 167750), (122, 166375), (125, 162382), (242, 83875), (250, 81191), (275, 73810), (305, 66550), (550, 36905), (605, 33550), (610, 33275), (671, 30250), (1210, 16775), (1331, 15250), (1342, 15125), (1375, 14762), (1525, 13310), (2662, 7625), (2750, 7381), (3025, 6710), (3050, 6655), (3355, 6050)]