18890313

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 30041280

約数和(自身を除く): 11150967

約数列:

[1, 3, 13, 19, 37, 39, 53, 57, 111, 159, 169, 247, 481, 507, 689, 703, 741, 1007, 1443, 1961, 2067, 2109, 3021, 3211, 5883, 6253, 8957, 9139, 9633, 13091, 18759, 25493, 26871, 27417, 37259, 39273, 76479, 111777, 118807, 170183, 331409, 356421, 484367, 510549, 994227, 1453101, 6296771, 18890313]

約数ペア:

[(1, 18890313), (3, 6296771), (13, 1453101), (19, 994227), (37, 510549), (39, 484367), (53, 356421), (57, 331409), (111, 170183), (159, 118807), (169, 111777), (247, 76479), (481, 39273), (507, 37259), (689, 27417), (703, 26871), (741, 25493), (1007, 18759), (1443, 13091), (1961, 9633), (2067, 9139), (2109, 8957), (3021, 6253), (3211, 5883)]