81405688

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{111821}}^1$

素因数の和:111847

約数の個数: 32

約数和(自身を含む): 187860960

約数和(自身を除く): 106455272

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 111821, 223642, 447284, 782747, 894568, 1453673, 1565494, 2907346, 3130988, 5814692, 6261976, 10175711, 11629384, 20351422, 40702844, 81405688]

約数ペア:

[(1, 81405688), (2, 40702844), (4, 20351422), (7, 11629384), (8, 10175711), (13, 6261976), (14, 5814692), (26, 3130988), (28, 2907346), (52, 1565494), (56, 1453673), (91, 894568), (104, 782747), (182, 447284), (364, 223642), (728, 111821)]