21189064

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2579}}^1$

素因数の和:2677

約数の個数: 32

約数和(自身を含む): 43344000

約数和(自身を除く): 22154936

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2579, 4108, 5158, 8216, 10316, 20632, 33527, 67054, 134108, 203741, 268216, 407482, 814964, 1629928, 2648633, 5297266, 10594532, 21189064]

約数ペア:

[(1, 21189064), (2, 10594532), (4, 5297266), (8, 2648633), (13, 1629928), (26, 814964), (52, 407482), (79, 268216), (104, 203741), (158, 134108), (316, 67054), (632, 33527), (1027, 20632), (2054, 10316), (2579, 8216), (4108, 5158)]