19980051

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{449}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 13082349

約数列:

[1, 3, 7, 13, 21, 39, 91, 163, 273, 449, 489, 1141, 1347, 2119, 3143, 3423, 5837, 6357, 9429, 14833, 17511, 40859, 44499, 73187, 122577, 219561, 512309, 951431, 1536927, 2854293, 6660017, 19980051]

約数ペア:

[(1, 19980051), (3, 6660017), (7, 2854293), (13, 1536927), (21, 951431), (39, 512309), (91, 219561), (163, 122577), (273, 73187), (449, 44499), (489, 40859), (1141, 17511), (1347, 14833), (2119, 9429), (3143, 6357), (3423, 5837)]