20968335620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2459}}^1\times {\mathrm{10399}}^1$

素因数の和:12908

約数の個数: 48

約数和(自身を含む): 45130176000

約数和(自身を除く): 24161840380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2459, 4918, 9836, 10399, 12295, 20798, 24590, 41596, 49180, 51995, 100819, 103990, 201638, 207980, 403276, 426359, 504095, 852718, 1008190, 1705436, 2016380, 2131795, 4263590, 8527180, 25571141, 51142282, 102284564, 127855705, 255711410, 511422820, 1048416781, 2096833562, 4193667124, 5242083905, 10484167810, 20968335620]

約数ペア:

[(1, 20968335620), (2, 10484167810), (4, 5242083905), (5, 4193667124), (10, 2096833562), (20, 1048416781), (41, 511422820), (82, 255711410), (164, 127855705), (205, 102284564), (410, 51142282), (820, 25571141), (2459, 8527180), (4918, 4263590), (9836, 2131795), (10399, 2016380), (12295, 1705436), (20798, 1008190), (24590, 852718), (41596, 504095), (49180, 426359), (51995, 403276), (100819, 207980), (103990, 201638)]