21999275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1399}}^1$

素因数の和:1463

約数の個数: 24

約数和(自身を含む): 29685600

約数和(自身を除く): 7686325

約数列:

[1, 5, 17, 25, 37, 85, 185, 425, 629, 925, 1399, 3145, 6995, 15725, 23783, 34975, 51763, 118915, 258815, 594575, 879971, 1294075, 4399855, 21999275]

約数ペア:

[(1, 21999275), (5, 4399855), (17, 1294075), (25, 879971), (37, 594575), (85, 258815), (185, 118915), (425, 51763), (629, 34975), (925, 23783), (1399, 15725), (3145, 6995)]