19883812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{271}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 40303872

約数和(自身を除く): 20420060

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 83, 166, 221, 271, 332, 442, 542, 884, 1079, 1084, 1411, 2158, 2822, 3523, 4316, 4607, 5644, 7046, 9214, 14092, 18343, 18428, 22493, 36686, 44986, 59891, 73372, 89972, 119782, 239564, 292409, 382381, 584818, 764762, 1169636, 1529524, 4970953, 9941906, 19883812]

約数ペア:

[(1, 19883812), (2, 9941906), (4, 4970953), (13, 1529524), (17, 1169636), (26, 764762), (34, 584818), (52, 382381), (68, 292409), (83, 239564), (166, 119782), (221, 89972), (271, 73372), (332, 59891), (442, 44986), (542, 36686), (884, 22493), (1079, 18428), (1084, 18343), (1411, 14092), (2158, 9214), (2822, 7046), (3523, 5644), (4316, 4607)]