388428859

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{761}}^1$

素因数の和:931

約数の個数: 32

約数和(自身を含む): 491581440

約数和(自身を除く): 103152581

約数列:

[1, 7, 13, 71, 79, 91, 497, 553, 761, 923, 1027, 5327, 5609, 6461, 7189, 9893, 39263, 54031, 60119, 69251, 72917, 378217, 420833, 510419, 702403, 781547, 4268449, 4916821, 5470829, 29879143, 55489837, 388428859]

約数ペア:

[(1, 388428859), (7, 55489837), (13, 29879143), (71, 5470829), (79, 4916821), (91, 4268449), (497, 781547), (553, 702403), (761, 510419), (923, 420833), (1027, 378217), (5327, 72917), (5609, 69251), (6461, 60119), (7189, 54031), (9893, 39263)]