19957575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1423}}^1$

素因数の和:1464

約数の個数: 48

約数和(自身を含む): 38140416

約数和(自身を除く): 18182841

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1423, 2805, 4269, 4675, 7115, 14025, 15653, 21345, 24191, 35575, 46959, 72573, 78265, 106725, 120955, 234795, 266101, 362865, 391325, 604775, 798303, 1173975, 1330505, 1814325, 3991515, 6652525, 19957575]

約数ペア:

[(1, 19957575), (3, 6652525), (5, 3991515), (11, 1814325), (15, 1330505), (17, 1173975), (25, 798303), (33, 604775), (51, 391325), (55, 362865), (75, 266101), (85, 234795), (165, 120955), (187, 106725), (255, 78265), (275, 72573), (425, 46959), (561, 35575), (825, 24191), (935, 21345), (1275, 15653), (1423, 14025), (2805, 7115), (4269, 4675)]