20187405

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3373}}^1$

素因数の和:3410

約数の個数: 48

約数和(自身を含む): 42107520

約数和(自身を除く): 21920115

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3373, 5985, 10119, 16865, 23611, 30357, 50595, 64087, 70833, 118055, 151785, 192261, 212499, 320435, 354165, 448609, 576783, 961305, 1062495, 1345827, 2243045, 2883915, 4037481, 6729135, 20187405]

約数ペア:

[(1, 20187405), (3, 6729135), (5, 4037481), (7, 2883915), (9, 2243045), (15, 1345827), (19, 1062495), (21, 961305), (35, 576783), (45, 448609), (57, 354165), (63, 320435), (95, 212499), (105, 192261), (133, 151785), (171, 118055), (285, 70833), (315, 64087), (399, 50595), (665, 30357), (855, 23611), (1197, 16865), (1995, 10119), (3373, 5985)]