21547461

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{569}}^1\times {\mathrm{971}}^1$

素因数の和:1556

約数の個数: 16

約数和(自身を含む): 31026240

約数和(自身を除く): 9478779

約数列:

[1, 3, 13, 39, 569, 971, 1707, 2913, 7397, 12623, 22191, 37869, 552499, 1657497, 7182487, 21547461]

約数ペア:

[(1, 21547461), (3, 7182487), (13, 1657497), (39, 552499), (569, 37869), (971, 22191), (1707, 12623), (2913, 7397)]