280776980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{17483}}^1$

素因数の和:17576

約数の個数: 48

約数和(自身を含む): 652083264

約数和(自身を除く): 371306284

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1460, 1606, 3212, 4015, 8030, 16060, 17483, 34966, 69932, 87415, 174830, 192313, 349660, 384626, 769252, 961565, 1276259, 1923130, 2552518, 3846260, 5105036, 6381295, 12762590, 14038849, 25525180, 28077698, 56155396, 70194245, 140388490, 280776980]

約数ペア:

[(1, 280776980), (2, 140388490), (4, 70194245), (5, 56155396), (10, 28077698), (11, 25525180), (20, 14038849), (22, 12762590), (44, 6381295), (55, 5105036), (73, 3846260), (110, 2552518), (146, 1923130), (220, 1276259), (292, 961565), (365, 769252), (730, 384626), (803, 349660), (1460, 192313), (1606, 174830), (3212, 87415), (4015, 69932), (8030, 34966), (16060, 17483)]