20199889940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1\times {\mathrm{59951}}^1$

素因数の和:60968

約数の個数: 48

約数和(自身を含む): 44961122304

約数和(自身を除く): 24761232364

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 991, 1982, 3964, 4955, 9910, 16847, 19820, 33694, 59951, 67388, 84235, 119902, 168470, 239804, 299755, 336940, 599510, 1019167, 1199020, 2038334, 4076668, 5095835, 10191670, 20383340, 59411441, 118822882, 237645764, 297057205, 594114410, 1009994497, 1188228820, 2019988994, 4039977988, 5049972485, 10099944970, 20199889940]

約数ペア:

[(1, 20199889940), (2, 10099944970), (4, 5049972485), (5, 4039977988), (10, 2019988994), (17, 1188228820), (20, 1009994497), (34, 594114410), (68, 297057205), (85, 237645764), (170, 118822882), (340, 59411441), (991, 20383340), (1982, 10191670), (3964, 5095835), (4955, 4076668), (9910, 2038334), (16847, 1199020), (19820, 1019167), (33694, 599510), (59951, 336940), (67388, 299755), (84235, 239804), (119902, 168470)]