21316015

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{21001}}^1$

素因数の和:21042

約数の個数: 16

約数和(自身を含む): 30242880

約数和(自身を除く): 8926865

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 21001, 105005, 147007, 609029, 735035, 3045145, 4263203, 21316015]

約数ペア:

[(1, 21316015), (5, 4263203), (7, 3045145), (29, 735035), (35, 609029), (145, 147007), (203, 105005), (1015, 21001)]