21392553

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3407}}^1$

素因数の和:3453

約数の個数: 32

約数和(自身を含む): 36642816

約数和(自身を除く): 15250263

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 897, 2093, 3407, 6279, 10221, 23849, 44291, 71547, 78361, 132873, 235083, 310037, 548527, 930111, 1018693, 1645581, 3056079, 7130851, 21392553]

約数ペア:

[(1, 21392553), (3, 7130851), (7, 3056079), (13, 1645581), (21, 1018693), (23, 930111), (39, 548527), (69, 310037), (91, 235083), (161, 132873), (273, 78361), (299, 71547), (483, 44291), (897, 23849), (2093, 10221), (3407, 6279)]