249248979

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{541}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 422083584

約数和(自身を除く): 172834605

約数列:

[1, 3, 7, 9, 21, 63, 71, 103, 213, 309, 497, 541, 639, 721, 927, 1491, 1623, 2163, 3787, 4473, 4869, 6489, 7313, 11361, 21939, 34083, 38411, 51191, 55723, 65817, 115233, 153573, 167169, 268877, 345699, 390061, 460719, 501507, 806631, 1170183, 2419893, 3510549, 3956333, 11868999, 27694331, 35606997, 83082993, 249248979]

約数ペア:

[(1, 249248979), (3, 83082993), (7, 35606997), (9, 27694331), (21, 11868999), (63, 3956333), (71, 3510549), (103, 2419893), (213, 1170183), (309, 806631), (497, 501507), (541, 460719), (639, 390061), (721, 345699), (927, 268877), (1491, 167169), (1623, 153573), (2163, 115233), (3787, 65817), (4473, 55723), (4869, 51191), (6489, 38411), (7313, 34083), (11361, 21939)]