19147820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1229}}^1$

素因数の和:1298

約数の個数: 48

約数和(自身を含む): 43394400

約数和(自身を除く): 24246580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1229, 1558, 2458, 3116, 3895, 4916, 6145, 7790, 12290, 15580, 23351, 24580, 46702, 50389, 93404, 100778, 116755, 201556, 233510, 251945, 467020, 503890, 957391, 1007780, 1914782, 3829564, 4786955, 9573910, 19147820]

約数ペア:

[(1, 19147820), (2, 9573910), (4, 4786955), (5, 3829564), (10, 1914782), (19, 1007780), (20, 957391), (38, 503890), (41, 467020), (76, 251945), (82, 233510), (95, 201556), (164, 116755), (190, 100778), (205, 93404), (380, 50389), (410, 46702), (779, 24580), (820, 23351), (1229, 15580), (1558, 12290), (2458, 7790), (3116, 6145), (3895, 4916)]