15811978

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 30252096

約数和(自身を除く): 14440118

約数列:

[1, 2, 7, 13, 14, 26, 41, 82, 91, 163, 169, 182, 287, 326, 338, 533, 574, 1066, 1141, 1183, 2119, 2282, 2366, 3731, 4238, 6683, 6929, 7462, 13366, 13858, 14833, 27547, 29666, 46781, 48503, 55094, 86879, 93562, 97006, 173758, 192829, 385658, 608153, 1129427, 1216306, 2258854, 7905989, 15811978]

約数ペア:

[(1, 15811978), (2, 7905989), (7, 2258854), (13, 1216306), (14, 1129427), (26, 608153), (41, 385658), (82, 192829), (91, 173758), (163, 97006), (169, 93562), (182, 86879), (287, 55094), (326, 48503), (338, 46781), (533, 29666), (574, 27547), (1066, 14833), (1141, 13858), (1183, 13366), (2119, 7462), (2282, 6929), (2366, 6683), (3731, 4238)]