20212915

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{6427}}^1$

素因数の和:6486

約数の個数: 16

約数和(自身を含む): 26380512

約数和(自身を除く): 6167597

約数列:

[1, 5, 17, 37, 85, 185, 629, 3145, 6427, 32135, 109259, 237799, 546295, 1188995, 4042583, 20212915]

約数ペア:

[(1, 20212915), (5, 4042583), (17, 1188995), (37, 546295), (85, 237799), (185, 109259), (629, 32135), (3145, 6427)]