18442490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{431}}^1$

素因数の和:838

約数の個数: 32

約数和(自身を含む): 36391680

約数和(自身を除く): 17949190

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 389, 431, 778, 862, 1945, 2155, 3890, 4279, 4310, 4741, 8558, 9482, 21395, 23705, 42790, 47410, 167659, 335318, 838295, 1676590, 1844249, 3688498, 9221245, 18442490]

約数ペア:

[(1, 18442490), (2, 9221245), (5, 3688498), (10, 1844249), (11, 1676590), (22, 838295), (55, 335318), (110, 167659), (389, 47410), (431, 42790), (778, 23705), (862, 21395), (1945, 9482), (2155, 8558), (3890, 4741), (4279, 4310)]