81213795

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 155872080

約数和(自身を除く): 74658285

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 59, 65, 117, 169, 177, 181, 195, 295, 507, 531, 543, 585, 767, 845, 885, 905, 1521, 1629, 2301, 2353, 2535, 2655, 2715, 3835, 6903, 7059, 7605, 8145, 9971, 10679, 11505, 11765, 21177, 29913, 30589, 32037, 34515, 35295, 49855, 53395, 89739, 91767, 96111, 105885, 138827, 149565, 152945, 160185, 275301, 416481, 448695, 458835, 480555, 694135, 1249443, 1376505, 1804751, 2082405, 5414253, 6247215, 9023755, 16242759, 27071265, 81213795]

約数ペア:

[(1, 81213795), (3, 27071265), (5, 16242759), (9, 9023755), (13, 6247215), (15, 5414253), (39, 2082405), (45, 1804751), (59, 1376505), (65, 1249443), (117, 694135), (169, 480555), (177, 458835), (181, 448695), (195, 416481), (295, 275301), (507, 160185), (531, 152945), (543, 149565), (585, 138827), (767, 105885), (845, 96111), (885, 91767), (905, 89739), (1521, 53395), (1629, 49855), (2301, 35295), (2353, 34515), (2535, 32037), (2655, 30589), (2715, 29913), (3835, 21177), (6903, 11765), (7059, 11505), (7605, 10679), (8145, 9971)]