21389992

素因数分解:

$2^3\times {\mathrm{13}}^3\times {\mathrm{1217}}^1$

素因数の和:1262

約数の個数: 32

約数和(自身を含む): 43482600

約数和(自身を除く): 22092608

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1217, 1352, 2197, 2434, 4394, 4868, 8788, 9736, 15821, 17576, 31642, 63284, 126568, 205673, 411346, 822692, 1645384, 2673749, 5347498, 10694996, 21389992]

約数ペア:

[(1, 21389992), (2, 10694996), (4, 5347498), (8, 2673749), (13, 1645384), (26, 822692), (52, 411346), (104, 205673), (169, 126568), (338, 63284), (676, 31642), (1217, 17576), (1352, 15821), (2197, 9736), (2434, 8788), (4394, 4868)]