18918075

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 35640576

約数和(自身を除く): 16722501

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 55, 69, 75, 115, 165, 253, 275, 345, 575, 759, 825, 997, 1265, 1725, 2991, 3795, 4985, 6325, 10967, 14955, 18975, 22931, 24925, 32901, 54835, 68793, 74775, 114655, 164505, 252241, 274175, 343965, 573275, 756723, 822525, 1261205, 1719825, 3783615, 6306025, 18918075]

約数ペア:

[(1, 18918075), (3, 6306025), (5, 3783615), (11, 1719825), (15, 1261205), (23, 822525), (25, 756723), (33, 573275), (55, 343965), (69, 274175), (75, 252241), (115, 164505), (165, 114655), (253, 74775), (275, 68793), (345, 54835), (575, 32901), (759, 24925), (825, 22931), (997, 18975), (1265, 14955), (1725, 10967), (2991, 6325), (3795, 4985)]