21701365

素因数分解:

$5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{877}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 30628152

約数和(自身を除く): 8926787

約数列:

[1, 5, 7, 35, 49, 101, 245, 505, 707, 877, 3535, 4385, 4949, 6139, 24745, 30695, 42973, 88577, 214865, 442885, 620039, 3100195, 4340273, 21701365]

約数ペア:

[(1, 21701365), (5, 4340273), (7, 3100195), (35, 620039), (49, 442885), (101, 214865), (245, 88577), (505, 42973), (707, 30695), (877, 24745), (3535, 6139), (4385, 4949)]