21379983

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1721}}^1$

素因数の和:1866

約数の個数: 16

約数和(自身を含む): 29508192

約数和(自身を除く): 8128209

約数列:

[1, 3, 41, 101, 123, 303, 1721, 4141, 5163, 12423, 70561, 173821, 211683, 521463, 7126661, 21379983]

約数ペア:

[(1, 21379983), (3, 7126661), (41, 521463), (101, 211683), (123, 173821), (303, 70561), (1721, 12423), (4141, 5163)]