18657890

素因数分解:

$2^1\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{1831}}^1$

素因数の和:2857

約数の個数: 16

約数和(自身を含む): 33635520

約数和(自身を除く): 14977630

約数列:

[1, 2, 5, 10, 1019, 1831, 2038, 3662, 5095, 9155, 10190, 18310, 1865789, 3731578, 9328945, 18657890]

約数ペア:

[(1, 18657890), (2, 9328945), (5, 3731578), (10, 1865789), (1019, 18310), (1831, 10190), (2038, 9155), (3662, 5095)]