31242980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{25609}}^1$

素因数の和:25679

約数の個数: 24

約数和(自身を含む): 66688440

約数和(自身を除く): 35445460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 25609, 51218, 102436, 128045, 256090, 512180, 1562149, 3124298, 6248596, 7810745, 15621490, 31242980]

約数ペア:

[(1, 31242980), (2, 15621490), (4, 7810745), (5, 6248596), (10, 3124298), (20, 1562149), (61, 512180), (122, 256090), (244, 128045), (305, 102436), (610, 51218), (1220, 25609)]