21160395

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{24749}}^1$

素因数の和:24779

約数の個数: 24

約数和(自身を含む): 38610000

約数和(自身を除く): 17449605

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 24749, 74247, 123745, 222741, 371235, 470231, 1113705, 1410693, 2351155, 4232079, 7053465, 21160395]

約数ペア:

[(1, 21160395), (3, 7053465), (5, 4232079), (9, 2351155), (15, 1410693), (19, 1113705), (45, 470231), (57, 371235), (95, 222741), (171, 123745), (285, 74247), (855, 24749)]