21259658721

素因数分解:

$3^1\times 7^1\times {\mathrm{26501}}^1\times {\mathrm{38201}}^1$

素因数の和:64712

約数の個数: 16

約数和(自身を含む): 32397740928

約数和(自身を除く): 11138082207

約数列:

[1, 3, 7, 21, 26501, 38201, 79503, 114603, 185507, 267407, 556521, 802221, 1012364701, 3037094103, 7086552907, 21259658721]

約数ペア:

[(1, 21259658721), (3, 7086552907), (7, 3037094103), (21, 1012364701), (26501, 802221), (38201, 556521), (79503, 267407), (114603, 185507)]