21734960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20899}}^1$

素因数の和:20925

約数の個数: 40

約数和(自身を含む): 54423600

約数和(自身を除く): 32688640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20899, 41798, 83596, 104495, 167192, 208990, 271687, 334384, 417980, 543374, 835960, 1086748, 1358435, 1671920, 2173496, 2716870, 4346992, 5433740, 10867480, 21734960]

約数ペア:

[(1, 21734960), (2, 10867480), (4, 5433740), (5, 4346992), (8, 2716870), (10, 2173496), (13, 1671920), (16, 1358435), (20, 1086748), (26, 835960), (40, 543374), (52, 417980), (65, 334384), (80, 271687), (104, 208990), (130, 167192), (208, 104495), (260, 83596), (520, 41798), (1040, 20899)]