81408015

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^2$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 159239808

約数和(自身を除く): 77831793

約数列:

[1, 3, 5, 9, 13, 15, 31, 39, 45, 65, 67, 93, 117, 155, 195, 201, 279, 335, 403, 465, 585, 603, 871, 1005, 1209, 1395, 2015, 2077, 2613, 3015, 3627, 4355, 4489, 6045, 6231, 7839, 10385, 13065, 13467, 18135, 18693, 22445, 27001, 31155, 39195, 40401, 58357, 67335, 81003, 93465, 135005, 139159, 175071, 202005, 243009, 291785, 405015, 417477, 525213, 695795, 875355, 1215045, 1252431, 1809067, 2087385, 2626065, 5427201, 6262155, 9045335, 16281603, 27136005, 81408015]

約数ペア:

[(1, 81408015), (3, 27136005), (5, 16281603), (9, 9045335), (13, 6262155), (15, 5427201), (31, 2626065), (39, 2087385), (45, 1809067), (65, 1252431), (67, 1215045), (93, 875355), (117, 695795), (155, 525213), (195, 417477), (201, 405015), (279, 291785), (335, 243009), (403, 202005), (465, 175071), (585, 139159), (603, 135005), (871, 93465), (1005, 81003), (1209, 67335), (1395, 58357), (2015, 40401), (2077, 39195), (2613, 31155), (3015, 27001), (3627, 22445), (4355, 18693), (4489, 18135), (6045, 13467), (6231, 13065), (7839, 10385)]