19894576

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{947}}^1$

素因数の和:1069

約数の個数: 40

約数和(自身を含む): 41966064

約数和(自身を除く): 22071488

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 101, 104, 202, 208, 404, 808, 947, 1313, 1616, 1894, 2626, 3788, 5252, 7576, 10504, 12311, 15152, 21008, 24622, 49244, 95647, 98488, 191294, 196976, 382588, 765176, 1243411, 1530352, 2486822, 4973644, 9947288, 19894576]

約数ペア:

[(1, 19894576), (2, 9947288), (4, 4973644), (8, 2486822), (13, 1530352), (16, 1243411), (26, 765176), (52, 382588), (101, 196976), (104, 191294), (202, 98488), (208, 95647), (404, 49244), (808, 24622), (947, 21008), (1313, 15152), (1616, 12311), (1894, 10504), (2626, 7576), (3788, 5252)]