20488125

素因数分解:

$3^1\times 5^4\times 7^2\times {\mathrm{223}}^1$

素因数の和:260

約数の個数: 60

約数和(自身を含む): 39887232

約数和(自身を除く): 19399107

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 125, 147, 175, 223, 245, 375, 525, 625, 669, 735, 875, 1115, 1225, 1561, 1875, 2625, 3345, 3675, 4375, 4683, 5575, 6125, 7805, 10927, 13125, 16725, 18375, 23415, 27875, 30625, 32781, 39025, 54635, 83625, 91875, 117075, 139375, 163905, 195125, 273175, 418125, 585375, 819525, 975625, 1365875, 2926875, 4097625, 6829375, 20488125]

約数ペア:

[(1, 20488125), (3, 6829375), (5, 4097625), (7, 2926875), (15, 1365875), (21, 975625), (25, 819525), (35, 585375), (49, 418125), (75, 273175), (105, 195125), (125, 163905), (147, 139375), (175, 117075), (223, 91875), (245, 83625), (375, 54635), (525, 39025), (625, 32781), (669, 30625), (735, 27875), (875, 23415), (1115, 18375), (1225, 16725), (1561, 13125), (1875, 10927), (2625, 7805), (3345, 6125), (3675, 5575), (4375, 4683)]