19912781149

素因数分解:

${\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{155119}}^1$

素因数の和:155292

約数の個数: 16

約数和(自身を含む): 21265090560

約数和(自身を除く): 1352309411

約数列:

[1, 31, 41, 101, 1271, 3131, 4141, 128371, 155119, 4808689, 6359879, 15667019, 197156249, 485677589, 642347779, 19912781149]

約数ペア:

[(1, 19912781149), (31, 642347779), (41, 485677589), (101, 197156249), (1271, 15667019), (3131, 6359879), (4141, 4808689), (128371, 155119)]