20107918520

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{727}}^1\times {\mathrm{9739}}^1$

素因数の和:10548

約数の個数: 64

約数和(自身を含む): 45947865600

約数和(自身を除く): 25839947080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 727, 1420, 1454, 2840, 2908, 3635, 5816, 7270, 9739, 14540, 19478, 29080, 38956, 48695, 51617, 77912, 97390, 103234, 194780, 206468, 258085, 389560, 412936, 516170, 691469, 1032340, 1382938, 2064680, 2765876, 3457345, 5531752, 6914690, 7080253, 13829380, 14160506, 27658760, 28321012, 35401265, 56642024, 70802530, 141605060, 283210120, 502697963, 1005395926, 2010791852, 2513489815, 4021583704, 5026979630, 10053959260, 20107918520]

約数ペア:

[(1, 20107918520), (2, 10053959260), (4, 5026979630), (5, 4021583704), (8, 2513489815), (10, 2010791852), (20, 1005395926), (40, 502697963), (71, 283210120), (142, 141605060), (284, 70802530), (355, 56642024), (568, 35401265), (710, 28321012), (727, 27658760), (1420, 14160506), (1454, 13829380), (2840, 7080253), (2908, 6914690), (3635, 5531752), (5816, 3457345), (7270, 2765876), (9739, 2064680), (14540, 1382938), (19478, 1032340), (29080, 691469), (38956, 516170), (48695, 412936), (51617, 389560), (77912, 258085), (97390, 206468), (103234, 194780)]