21667490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12821}}^1$

素因数の和:12854

約数の個数: 24

約数和(自身を含む): 42235668

約数和(自身を除く): 20568178

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12821, 25642, 64105, 128210, 166673, 333346, 833365, 1666730, 2166749, 4333498, 10833745, 21667490]

約数ペア:

[(1, 21667490), (2, 10833745), (5, 4333498), (10, 2166749), (13, 1666730), (26, 833365), (65, 333346), (130, 166673), (169, 128210), (338, 64105), (845, 25642), (1690, 12821)]