20488750

素因数分解:

$2^1\times 5^4\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:502

約数の個数: 40

約数和(自身を含む): 39531096

約数和(自身を除く): 19042346

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 125, 185, 250, 370, 443, 625, 886, 925, 1250, 1850, 2215, 4430, 4625, 9250, 11075, 16391, 22150, 23125, 32782, 46250, 55375, 81955, 110750, 163910, 276875, 409775, 553750, 819550, 2048875, 4097750, 10244375, 20488750]

約数ペア:

[(1, 20488750), (2, 10244375), (5, 4097750), (10, 2048875), (25, 819550), (37, 553750), (50, 409775), (74, 276875), (125, 163910), (185, 110750), (250, 81955), (370, 55375), (443, 46250), (625, 32782), (886, 23125), (925, 22150), (1250, 16391), (1850, 11075), (2215, 9250), (4430, 4625)]