18948189

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 9356451

約数列:

[1, 3, 13, 39, 53, 89, 103, 159, 267, 309, 689, 1157, 1339, 2067, 3471, 4017, 4717, 5459, 9167, 14151, 16377, 27501, 61321, 70967, 119171, 183963, 212901, 357513, 485851, 1457553, 6316063, 18948189]

約数ペア:

[(1, 18948189), (3, 6316063), (13, 1457553), (39, 485851), (53, 357513), (89, 212901), (103, 183963), (159, 119171), (267, 70967), (309, 61321), (689, 27501), (1157, 16377), (1339, 14151), (2067, 9167), (3471, 5459), (4017, 4717)]