19913805

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23291}}^1$

素因数の和:23321

約数の個数: 24

約数和(自身を含む): 36335520

約数和(自身を除く): 16421715

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 23291, 69873, 116455, 209619, 349365, 442529, 1048095, 1327587, 2212645, 3982761, 6637935, 19913805]

約数ペア:

[(1, 19913805), (3, 6637935), (5, 3982761), (9, 2212645), (15, 1327587), (19, 1048095), (45, 442529), (57, 349365), (95, 209619), (171, 116455), (285, 69873), (855, 23291)]