21565341

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{619}}^1$

素因数の和:718

約数の個数: 36

約数和(自身を含む): 36753600

約数和(自身を除く): 15188259

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 619, 711, 1659, 1857, 3871, 4333, 4977, 5571, 11613, 12999, 30331, 34839, 38997, 48901, 90993, 146703, 272979, 342307, 440109, 1026921, 2396149, 3080763, 7188447, 21565341]

約数ペア:

[(1, 21565341), (3, 7188447), (7, 3080763), (9, 2396149), (21, 1026921), (49, 440109), (63, 342307), (79, 272979), (147, 146703), (237, 90993), (441, 48901), (553, 38997), (619, 34839), (711, 30331), (1659, 12999), (1857, 11613), (3871, 5571), (4333, 4977)]