19780930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{2579}}^1$

素因数の和:2658

約数の個数: 32

約数和(自身を含む): 39009600

約数和(自身を除く): 19228670

約数列:

[1, 2, 5, 10, 13, 26, 59, 65, 118, 130, 295, 590, 767, 1534, 2579, 3835, 5158, 7670, 12895, 25790, 33527, 67054, 152161, 167635, 304322, 335270, 760805, 1521610, 1978093, 3956186, 9890465, 19780930]

約数ペア:

[(1, 19780930), (2, 9890465), (5, 3956186), (10, 1978093), (13, 1521610), (26, 760805), (59, 335270), (65, 304322), (118, 167635), (130, 152161), (295, 67054), (590, 33527), (767, 25790), (1534, 12895), (2579, 7670), (3835, 5158)]