81770940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2153}}^1$

素因数の和:2379

約数の個数: 72

約数和(自身を含む): 249329808

約数和(自身を除く): 167558868

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 211, 422, 633, 844, 1055, 1266, 1899, 2110, 2153, 2532, 3165, 3798, 4220, 4306, 6330, 6459, 7596, 8612, 9495, 10765, 12660, 12918, 18990, 19377, 21530, 25836, 32295, 37980, 38754, 43060, 64590, 77508, 96885, 129180, 193770, 387540, 454283, 908566, 1362849, 1817132, 2271415, 2725698, 4088547, 4542830, 5451396, 6814245, 8177094, 9085660, 13628490, 16354188, 20442735, 27256980, 40885470, 81770940]

約数ペア:

[(1, 81770940), (2, 40885470), (3, 27256980), (4, 20442735), (5, 16354188), (6, 13628490), (9, 9085660), (10, 8177094), (12, 6814245), (15, 5451396), (18, 4542830), (20, 4088547), (30, 2725698), (36, 2271415), (45, 1817132), (60, 1362849), (90, 908566), (180, 454283), (211, 387540), (422, 193770), (633, 129180), (844, 96885), (1055, 77508), (1266, 64590), (1899, 43060), (2110, 38754), (2153, 37980), (2532, 32295), (3165, 25836), (3798, 21530), (4220, 19377), (4306, 18990), (6330, 12918), (6459, 12660), (7596, 10765), (8612, 9495)]