21637356

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2617}}^1$

素因数の和:2690

約数の個数: 48

約数和(自身を含む): 55417824

約数和(自身を除く): 33780468

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 53, 78, 106, 156, 159, 212, 318, 636, 689, 1378, 2067, 2617, 2756, 4134, 5234, 7851, 8268, 10468, 15702, 31404, 34021, 68042, 102063, 136084, 138701, 204126, 277402, 408252, 416103, 554804, 832206, 1664412, 1803113, 3606226, 5409339, 7212452, 10818678, 21637356]

約数ペア:

[(1, 21637356), (2, 10818678), (3, 7212452), (4, 5409339), (6, 3606226), (12, 1803113), (13, 1664412), (26, 832206), (39, 554804), (52, 416103), (53, 408252), (78, 277402), (106, 204126), (156, 138701), (159, 136084), (212, 102063), (318, 68042), (636, 34021), (689, 31404), (1378, 15702), (2067, 10468), (2617, 8268), (2756, 7851), (4134, 5234)]