19886810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64151}}^1$

素因数の和:64189

約数の個数: 16

約数和(自身を含む): 36951552

約数和(自身を除く): 17064742

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 64151, 128302, 320755, 641510, 1988681, 3977362, 9943405, 19886810]

約数ペア:

[(1, 19886810), (2, 9943405), (5, 3977362), (10, 1988681), (31, 641510), (62, 320755), (155, 128302), (310, 64151)]