81233490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{208291}}^1$

素因数の和:208314

約数の個数: 32

約数和(自身を含む): 209958336

約数和(自身を除く): 128724846

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 208291, 416582, 624873, 1041455, 1249746, 2082910, 2707783, 3124365, 5415566, 6248730, 8123349, 13538915, 16246698, 27077830, 40616745, 81233490]

約数ペア:

[(1, 81233490), (2, 40616745), (3, 27077830), (5, 16246698), (6, 13538915), (10, 8123349), (13, 6248730), (15, 5415566), (26, 3124365), (30, 2707783), (39, 2082910), (65, 1249746), (78, 1041455), (130, 624873), (195, 416582), (390, 208291)]