21485709

素因数分解:

$3^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1439}}^1$

素因数の和:1534

約数の個数: 32

約数和(自身を含む): 36864000

約数和(自身を除く): 15378291

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 189, 237, 553, 711, 1439, 1659, 2133, 4317, 4977, 10073, 12951, 14931, 30219, 38853, 90657, 113681, 271971, 341043, 795767, 1023129, 2387301, 3069387, 7161903, 21485709]

約数ペア:

[(1, 21485709), (3, 7161903), (7, 3069387), (9, 2387301), (21, 1023129), (27, 795767), (63, 341043), (79, 271971), (189, 113681), (237, 90657), (553, 38853), (711, 30219), (1439, 14931), (1659, 12951), (2133, 10073), (4317, 4977)]