18298475

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:168

約数の個数: 36

約数和(自身を含む): 25324272

約数和(自身を除く): 7025797

約数列:

[1, 5, 13, 25, 61, 65, 71, 169, 305, 325, 355, 793, 845, 923, 1525, 1775, 3965, 4225, 4331, 4615, 10309, 11999, 19825, 21655, 23075, 51545, 56303, 59995, 108275, 257725, 281515, 299975, 731939, 1407575, 3659695, 18298475]

約数ペア:

[(1, 18298475), (5, 3659695), (13, 1407575), (25, 731939), (61, 299975), (65, 281515), (71, 257725), (169, 108275), (305, 59995), (325, 56303), (355, 51545), (793, 23075), (845, 21655), (923, 19825), (1525, 11999), (1775, 10309), (3965, 4615), (4225, 4331)]