31680909

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 52176960

約数和(自身を除く): 20496051

約数列:

[1, 3, 9, 13, 27, 39, 53, 117, 131, 159, 169, 351, 393, 477, 507, 689, 1179, 1431, 1521, 1703, 2067, 3537, 4563, 5109, 6201, 6943, 8957, 15327, 18603, 20829, 22139, 26871, 45981, 62487, 66417, 80613, 90259, 187461, 199251, 241839, 270777, 597753, 812331, 1173367, 2436993, 3520101, 10560303, 31680909]

約数ペア:

[(1, 31680909), (3, 10560303), (9, 3520101), (13, 2436993), (27, 1173367), (39, 812331), (53, 597753), (117, 270777), (131, 241839), (159, 199251), (169, 187461), (351, 90259), (393, 80613), (477, 66417), (507, 62487), (689, 45981), (1179, 26871), (1431, 22139), (1521, 20829), (1703, 18603), (2067, 15327), (3537, 8957), (4563, 6943), (5109, 6201)]