21902500

素因数分解:

$2^2\times 5^4\times {\mathrm{8761}}^1$

素因数の和:8785

約数の個数: 30

約数和(自身を含む): 47901854

約数和(自身を除く): 25999354

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8761, 17522, 35044, 43805, 87610, 175220, 219025, 438050, 876100, 1095125, 2190250, 4380500, 5475625, 10951250, 21902500]

約数ペア:

[(1, 21902500), (2, 10951250), (4, 5475625), (5, 4380500), (10, 2190250), (20, 1095125), (25, 876100), (50, 438050), (100, 219025), (125, 175220), (250, 87610), (500, 43805), (625, 35044), (1250, 17522), (2500, 8761)]