21573321

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1531}}^1$

素因数の和:1613

約数の個数: 32

約数和(自身を含む): 36473856

約数和(自身を除く): 14900535

約数列:

[1, 3, 7, 11, 21, 33, 61, 77, 183, 231, 427, 671, 1281, 1531, 2013, 4593, 4697, 10717, 14091, 16841, 32151, 50523, 93391, 117887, 280173, 353661, 653737, 1027301, 1961211, 3081903, 7191107, 21573321]

約数ペア:

[(1, 21573321), (3, 7191107), (7, 3081903), (11, 1961211), (21, 1027301), (33, 653737), (61, 353661), (77, 280173), (183, 117887), (231, 93391), (427, 50523), (671, 32151), (1281, 16841), (1531, 14091), (2013, 10717), (4593, 4697)]