66378980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{54409}}^1$

素因数の和:54479

約数の個数: 24

約数和(自身を含む): 141683640

約数和(自身を除く): 75304660

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 54409, 108818, 217636, 272045, 544090, 1088180, 3318949, 6637898, 13275796, 16594745, 33189490, 66378980]

約数ペア:

[(1, 66378980), (2, 33189490), (4, 16594745), (5, 13275796), (10, 6637898), (20, 3318949), (61, 1088180), (122, 544090), (244, 272045), (305, 217636), (610, 108818), (1220, 54409)]