18919696

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:391

約数の個数: 40

約数和(自身を含む): 37997568

約数和(自身を除く): 19077872

約数列:

[1, 2, 4, 8, 16, 41, 82, 151, 164, 191, 302, 328, 382, 604, 656, 764, 1208, 1528, 2416, 3056, 6191, 7831, 12382, 15662, 24764, 28841, 31324, 49528, 57682, 62648, 99056, 115364, 125296, 230728, 461456, 1182481, 2364962, 4729924, 9459848, 18919696]

約数ペア:

[(1, 18919696), (2, 9459848), (4, 4729924), (8, 2364962), (16, 1182481), (41, 461456), (82, 230728), (151, 125296), (164, 115364), (191, 99056), (302, 62648), (328, 57682), (382, 49528), (604, 31324), (656, 28841), (764, 24764), (1208, 15662), (1528, 12382), (2416, 7831), (3056, 6191)]