20428275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{233}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 18569229

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 167, 175, 233, 501, 525, 699, 835, 1165, 1169, 1631, 2505, 3495, 3507, 4175, 4893, 5825, 5845, 8155, 12525, 17475, 17535, 24465, 29225, 38911, 40775, 87675, 116733, 122325, 194555, 272377, 583665, 817131, 972775, 1361885, 2918325, 4085655, 6809425, 20428275]

約数ペア:

[(1, 20428275), (3, 6809425), (5, 4085655), (7, 2918325), (15, 1361885), (21, 972775), (25, 817131), (35, 583665), (75, 272377), (105, 194555), (167, 122325), (175, 116733), (233, 87675), (501, 40775), (525, 38911), (699, 29225), (835, 24465), (1165, 17535), (1169, 17475), (1631, 12525), (2505, 8155), (3495, 5845), (3507, 5825), (4175, 4893)]