21250299

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{233}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 33606144

約数和(自身を除く): 12355845

約数列:

[1, 3, 7, 21, 43, 101, 129, 233, 301, 303, 699, 707, 903, 1631, 2121, 4343, 4893, 10019, 13029, 23533, 30057, 30401, 70133, 70599, 91203, 164731, 210399, 494193, 1011919, 3035757, 7083433, 21250299]

約数ペア:

[(1, 21250299), (3, 7083433), (7, 3035757), (21, 1011919), (43, 494193), (101, 210399), (129, 164731), (233, 91203), (301, 70599), (303, 70133), (699, 30401), (707, 30057), (903, 23533), (1631, 13029), (2121, 10019), (4343, 4893)]