28802980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23609}}^1$

素因数の和:23679

約数の個数: 24

約数和(自身を含む): 61480440

約数和(自身を除く): 32677460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 23609, 47218, 94436, 118045, 236090, 472180, 1440149, 2880298, 5760596, 7200745, 14401490, 28802980]

約数ペア:

[(1, 28802980), (2, 14401490), (4, 7200745), (5, 5760596), (10, 2880298), (20, 1440149), (61, 472180), (122, 236090), (244, 118045), (305, 94436), (610, 47218), (1220, 23609)]