81066280

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{11197}}^1$

素因数の和:11389

約数の個数: 32

約数和(自身を含む): 183423240

約数和(自身を除く): 102356960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 11197, 22394, 44788, 55985, 89576, 111970, 223940, 447880, 2026657, 4053314, 8106628, 10133285, 16213256, 20266570, 40533140, 81066280]

約数ペア:

[(1, 81066280), (2, 40533140), (4, 20266570), (5, 16213256), (8, 10133285), (10, 8106628), (20, 4053314), (40, 2026657), (181, 447880), (362, 223940), (724, 111970), (905, 89576), (1448, 55985), (1810, 44788), (3620, 22394), (7240, 11197)]