20705145

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{683}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13965447

約数列:

[1, 3, 5, 15, 43, 47, 129, 141, 215, 235, 645, 683, 705, 2021, 2049, 3415, 6063, 10105, 10245, 29369, 30315, 32101, 88107, 96303, 146845, 160505, 440535, 481515, 1380343, 4141029, 6901715, 20705145]

約数ペア:

[(1, 20705145), (3, 6901715), (5, 4141029), (15, 1380343), (43, 481515), (47, 440535), (129, 160505), (141, 146845), (215, 96303), (235, 88107), (645, 32101), (683, 30315), (705, 29369), (2021, 10245), (2049, 10105), (3415, 6063)]