21609172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{2789}}^1$

素因数の和:2955

約数の個数: 24

約数和(自身を含む): 41013000

約数和(自身を除く): 19403828

約数列:

[1, 2, 4, 13, 26, 52, 149, 298, 596, 1937, 2789, 3874, 5578, 7748, 11156, 36257, 72514, 145028, 415561, 831122, 1662244, 5402293, 10804586, 21609172]

約数ペア:

[(1, 21609172), (2, 10804586), (4, 5402293), (13, 1662244), (26, 831122), (52, 415561), (149, 145028), (298, 72514), (596, 36257), (1937, 11156), (2789, 7748), (3874, 5578)]