21211365

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28859}}^1$

素因数の和:28881

約数の個数: 24

約数和(自身を含む): 39480480

約数和(自身を除く): 18269115

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28859, 86577, 144295, 202013, 432885, 606039, 1010065, 1414091, 3030195, 4242273, 7070455, 21211365]

約数ペア:

[(1, 21211365), (3, 7070455), (5, 4242273), (7, 3030195), (15, 1414091), (21, 1010065), (35, 606039), (49, 432885), (105, 202013), (147, 144295), (245, 86577), (735, 28859)]