21102010

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{68071}}^1$

素因数の和:68109

約数の個数: 16

約数和(自身を含む): 39209472

約数和(自身を除く): 18107462

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 68071, 136142, 340355, 680710, 2110201, 4220402, 10551005, 21102010]

約数ペア:

[(1, 21102010), (2, 10551005), (5, 4220402), (10, 2110201), (31, 680710), (62, 340355), (155, 136142), (310, 68071)]