20285500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1399}}^1$

素因数の和:1447

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 25578500

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 500, 580, 725, 1399, 1450, 2798, 2900, 3625, 5596, 6995, 7250, 13990, 14500, 27980, 34975, 40571, 69950, 81142, 139900, 162284, 174875, 202855, 349750, 405710, 699500, 811420, 1014275, 2028550, 4057100, 5071375, 10142750, 20285500]

約数ペア:

[(1, 20285500), (2, 10142750), (4, 5071375), (5, 4057100), (10, 2028550), (20, 1014275), (25, 811420), (29, 699500), (50, 405710), (58, 349750), (100, 202855), (116, 174875), (125, 162284), (145, 139900), (250, 81142), (290, 69950), (500, 40571), (580, 34975), (725, 27980), (1399, 14500), (1450, 13990), (2798, 7250), (2900, 6995), (3625, 5596)]