21956350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1987}}^1$

素因数の和:2029

約数の個数: 48

約数和(自身を含む): 46590768

約数和(自身を除く): 24634418

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1987, 2210, 3974, 5525, 9935, 11050, 19870, 25831, 33779, 49675, 51662, 67558, 99350, 129155, 168895, 258310, 337790, 439127, 645775, 844475, 878254, 1291550, 1688950, 2195635, 4391270, 10978175, 21956350]

約数ペア:

[(1, 21956350), (2, 10978175), (5, 4391270), (10, 2195635), (13, 1688950), (17, 1291550), (25, 878254), (26, 844475), (34, 645775), (50, 439127), (65, 337790), (85, 258310), (130, 168895), (170, 129155), (221, 99350), (325, 67558), (425, 51662), (442, 49675), (650, 33779), (850, 25831), (1105, 19870), (1987, 11050), (2210, 9935), (3974, 5525)]