21261009

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2969}}^1$

素因数の和:3021

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 15234351

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 217, 231, 341, 651, 1023, 2387, 2969, 7161, 8907, 20783, 32659, 62349, 92039, 97977, 228613, 276117, 644273, 685839, 1012429, 1932819, 3037287, 7087003, 21261009]

約数ペア:

[(1, 21261009), (3, 7087003), (7, 3037287), (11, 1932819), (21, 1012429), (31, 685839), (33, 644273), (77, 276117), (93, 228613), (217, 97977), (231, 92039), (341, 62349), (651, 32659), (1023, 20783), (2387, 8907), (2969, 7161)]