191567481

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{2153}}^1$

素因数の和:2405

約数の個数: 32

約数和(自身を含む): 308797440

約数和(自身を除く): 117229959

約数列:

[1, 3, 7, 19, 21, 57, 133, 223, 399, 669, 1561, 2153, 4237, 4683, 6459, 12711, 15071, 29659, 40907, 45213, 88977, 122721, 286349, 480119, 859047, 1440357, 3360833, 9122261, 10082499, 27366783, 63855827, 191567481]

約数ペア:

[(1, 191567481), (3, 63855827), (7, 27366783), (19, 10082499), (21, 9122261), (57, 3360833), (133, 1440357), (223, 859047), (399, 480119), (669, 286349), (1561, 122721), (2153, 88977), (4237, 45213), (4683, 40907), (6459, 29659), (12711, 15071)]