20408750

素因数分解:

$2^1\times 5^4\times {\mathrm{29}}^1\times {\mathrm{563}}^1$

素因数の和:614

約数の個数: 40

約数和(自身を含む): 39643560

約数和(自身を除く): 19234810

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 125, 145, 250, 290, 563, 625, 725, 1126, 1250, 1450, 2815, 3625, 5630, 7250, 14075, 16327, 18125, 28150, 32654, 36250, 70375, 81635, 140750, 163270, 351875, 408175, 703750, 816350, 2040875, 4081750, 10204375, 20408750]

約数ペア:

[(1, 20408750), (2, 10204375), (5, 4081750), (10, 2040875), (25, 816350), (29, 703750), (50, 408175), (58, 351875), (125, 163270), (145, 140750), (250, 81635), (290, 70375), (563, 36250), (625, 32654), (725, 28150), (1126, 18125), (1250, 16327), (1450, 14075), (2815, 7250), (3625, 5630)]