21784010

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70271}}^1$

素因数の和:70309

約数の個数: 16

約数和(自身を含む): 40476672

約数和(自身を除く): 18692662

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70271, 140542, 351355, 702710, 2178401, 4356802, 10892005, 21784010]

約数ペア:

[(1, 21784010), (2, 10892005), (5, 4356802), (10, 2178401), (31, 702710), (62, 351355), (155, 140542), (310, 70271)]