21580377

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{577}}^1$

素因数の和:737

約数の個数: 32

約数和(自身を含む): 35734272

約数和(自身を除く): 14153895

約数列:

[1, 3, 7, 13, 21, 39, 91, 137, 273, 411, 577, 959, 1731, 1781, 2877, 4039, 5343, 7501, 12117, 12467, 22503, 37401, 52507, 79049, 157521, 237147, 553343, 1027637, 1660029, 3082911, 7193459, 21580377]

約数ペア:

[(1, 21580377), (3, 7193459), (7, 3082911), (13, 1660029), (21, 1027637), (39, 553343), (91, 237147), (137, 157521), (273, 79049), (411, 52507), (577, 37401), (959, 22503), (1731, 12467), (1781, 12117), (2877, 7501), (4039, 5343)]