20303750

素因数分解:

$2^1\times 5^4\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:498

約数の個数: 40

約数和(自身を含む): 39174960

約数和(自身を除く): 18871210

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 125, 185, 250, 370, 439, 625, 878, 925, 1250, 1850, 2195, 4390, 4625, 9250, 10975, 16243, 21950, 23125, 32486, 46250, 54875, 81215, 109750, 162430, 274375, 406075, 548750, 812150, 2030375, 4060750, 10151875, 20303750]

約数ペア:

[(1, 20303750), (2, 10151875), (5, 4060750), (10, 2030375), (25, 812150), (37, 548750), (50, 406075), (74, 274375), (125, 162430), (185, 109750), (250, 81215), (370, 54875), (439, 46250), (625, 32486), (878, 23125), (925, 21950), (1250, 16243), (1850, 10975), (2195, 9250), (4390, 4625)]