19963216

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13711}}^1$

素因数の和:13739

約数の個数: 40

約数和(自身を含む): 47608064

約数和(自身を除く): 27644848

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13711, 27422, 54844, 95977, 109688, 178243, 191954, 219376, 356486, 383908, 712972, 767816, 1247701, 1425944, 1535632, 2495402, 2851888, 4990804, 9981608, 19963216]

約数ペア:

[(1, 19963216), (2, 9981608), (4, 4990804), (7, 2851888), (8, 2495402), (13, 1535632), (14, 1425944), (16, 1247701), (26, 767816), (28, 712972), (52, 383908), (56, 356486), (91, 219376), (104, 191954), (112, 178243), (182, 109688), (208, 95977), (364, 54844), (728, 27422), (1456, 13711)]