20565854920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{541777}}^1$

素因数の和:541874

約数の個数: 64

約数和(自身を含む): 50515380720

約数和(自身を除く): 29949525800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 520, 584, 730, 949, 1460, 1898, 2920, 3796, 4745, 7592, 9490, 18980, 37960, 541777, 1083554, 2167108, 2708885, 4334216, 5417770, 7043101, 10835540, 14086202, 21671080, 28172404, 35215505, 39549721, 56344808, 70431010, 79099442, 140862020, 158198884, 197748605, 281724040, 316397768, 395497210, 514146373, 790994420, 1028292746, 1581988840, 2056585492, 2570731865, 4113170984, 5141463730, 10282927460, 20565854920]

約数ペア:

[(1, 20565854920), (2, 10282927460), (4, 5141463730), (5, 4113170984), (8, 2570731865), (10, 2056585492), (13, 1581988840), (20, 1028292746), (26, 790994420), (40, 514146373), (52, 395497210), (65, 316397768), (73, 281724040), (104, 197748605), (130, 158198884), (146, 140862020), (260, 79099442), (292, 70431010), (365, 56344808), (520, 39549721), (584, 35215505), (730, 28172404), (949, 21671080), (1460, 14086202), (1898, 10835540), (2920, 7043101), (3796, 5417770), (4745, 4334216), (7592, 2708885), (9490, 2167108), (18980, 1083554), (37960, 541777)]