81408210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{208739}}^1$

素因数の和:208762

約数の個数: 32

約数和(自身を含む): 210409920

約数和(自身を除く): 129001710

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 208739, 417478, 626217, 1043695, 1252434, 2087390, 2713607, 3131085, 5427214, 6262170, 8140821, 13568035, 16281642, 27136070, 40704105, 81408210]

約数ペア:

[(1, 81408210), (2, 40704105), (3, 27136070), (5, 16281642), (6, 13568035), (10, 8140821), (13, 6262170), (15, 5427214), (26, 3131085), (30, 2713607), (39, 2087390), (65, 1252434), (78, 1043695), (130, 626217), (195, 417478), (390, 208739)]