31182021

素因数分解:

$3^2\times {\mathrm{13}}^3\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:147

約数の個数: 48

約数和(自身を含む): 51979200

約数和(自身を除く): 20797179

約数列:

[1, 3, 9, 13, 19, 39, 57, 83, 117, 169, 171, 247, 249, 507, 741, 747, 1079, 1521, 1577, 2197, 2223, 3211, 3237, 4731, 6591, 9633, 9711, 14027, 14193, 19773, 20501, 28899, 41743, 42081, 61503, 125229, 126243, 182351, 184509, 266513, 375687, 547053, 799539, 1641159, 2398617, 3464669, 10394007, 31182021]

約数ペア:

[(1, 31182021), (3, 10394007), (9, 3464669), (13, 2398617), (19, 1641159), (39, 799539), (57, 547053), (83, 375687), (117, 266513), (169, 184509), (171, 182351), (247, 126243), (249, 125229), (507, 61503), (741, 42081), (747, 41743), (1079, 28899), (1521, 20501), (1577, 19773), (2197, 14193), (2223, 14027), (3211, 9711), (3237, 9633), (4731, 6591)]