311944160

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^2$

素因数の和:868

約数の個数: 72

約数和(自身を含む): 805879368

約数和(自身を除く): 493935208

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 421, 440, 842, 880, 1684, 1760, 2105, 3368, 4210, 4631, 6736, 8420, 9262, 13472, 16840, 18524, 23155, 33680, 37048, 46310, 67360, 74096, 92620, 148192, 177241, 185240, 354482, 370480, 708964, 740960, 886205, 1417928, 1772410, 1949651, 2835856, 3544820, 3899302, 5671712, 7089640, 7798604, 9748255, 14179280, 15597208, 19496510, 28358560, 31194416, 38993020, 62388832, 77986040, 155972080, 311944160]

約数ペア:

[(1, 311944160), (2, 155972080), (4, 77986040), (5, 62388832), (8, 38993020), (10, 31194416), (11, 28358560), (16, 19496510), (20, 15597208), (22, 14179280), (32, 9748255), (40, 7798604), (44, 7089640), (55, 5671712), (80, 3899302), (88, 3544820), (110, 2835856), (160, 1949651), (176, 1772410), (220, 1417928), (352, 886205), (421, 740960), (440, 708964), (842, 370480), (880, 354482), (1684, 185240), (1760, 177241), (2105, 148192), (3368, 92620), (4210, 74096), (4631, 67360), (6736, 46310), (8420, 37048), (9262, 33680), (13472, 23155), (16840, 18524)]