20915050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1399}}^1$

素因数の和:1447

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 22832150

約数列:

[1, 2, 5, 10, 13, 23, 25, 26, 46, 50, 65, 115, 130, 230, 299, 325, 575, 598, 650, 1150, 1399, 1495, 2798, 2990, 6995, 7475, 13990, 14950, 18187, 32177, 34975, 36374, 64354, 69950, 90935, 160885, 181870, 321770, 418301, 454675, 804425, 836602, 909350, 1608850, 2091505, 4183010, 10457525, 20915050]

約数ペア:

[(1, 20915050), (2, 10457525), (5, 4183010), (10, 2091505), (13, 1608850), (23, 909350), (25, 836602), (26, 804425), (46, 454675), (50, 418301), (65, 321770), (115, 181870), (130, 160885), (230, 90935), (299, 69950), (325, 64354), (575, 36374), (598, 34975), (650, 32177), (1150, 18187), (1399, 14950), (1495, 13990), (2798, 7475), (2990, 6995)]