20875660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4723}}^1$

素因数の和:4762

約数の個数: 48

約数和(自身を含む): 49998816

約数和(自身を除く): 29123156

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4723, 9446, 18892, 23615, 47230, 61399, 80291, 94460, 122798, 160582, 245596, 306995, 321164, 401455, 613990, 802910, 1043783, 1227980, 1605820, 2087566, 4175132, 5218915, 10437830, 20875660]

約数ペア:

[(1, 20875660), (2, 10437830), (4, 5218915), (5, 4175132), (10, 2087566), (13, 1605820), (17, 1227980), (20, 1043783), (26, 802910), (34, 613990), (52, 401455), (65, 321164), (68, 306995), (85, 245596), (130, 160582), (170, 122798), (221, 94460), (260, 80291), (340, 61399), (442, 47230), (884, 23615), (1105, 18892), (2210, 9446), (4420, 4723)]