61718780

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^2$

素因数の和:446

約数の個数: 36

約数和(自身を含む): 131423880

約数和(自身を除く): 69705100

約数列:

[1, 2, 4, 5, 10, 20, 139, 149, 278, 298, 556, 596, 695, 745, 1390, 1490, 2780, 2980, 20711, 22201, 41422, 44402, 82844, 88804, 103555, 111005, 207110, 222010, 414220, 444020, 3085939, 6171878, 12343756, 15429695, 30859390, 61718780]

約数ペア:

[(1, 61718780), (2, 30859390), (4, 15429695), (5, 12343756), (10, 6171878), (20, 3085939), (139, 444020), (149, 414220), (278, 222010), (298, 207110), (556, 111005), (596, 103555), (695, 88804), (745, 82844), (1390, 44402), (1490, 41422), (2780, 22201), (2980, 20711)]