28166920

素因数分解:

$2^3\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1031}}^1$

素因数の和:1725

約数の個数: 32

約数和(自身を含む): 63529920

約数和(自身を除く): 35363000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 683, 1031, 1366, 2062, 2732, 3415, 4124, 5155, 5464, 6830, 8248, 10310, 13660, 20620, 27320, 41240, 704173, 1408346, 2816692, 3520865, 5633384, 7041730, 14083460, 28166920]

約数ペア:

[(1, 28166920), (2, 14083460), (4, 7041730), (5, 5633384), (8, 3520865), (10, 2816692), (20, 1408346), (40, 704173), (683, 41240), (1031, 27320), (1366, 20620), (2062, 13660), (2732, 10310), (3415, 8248), (4124, 6830), (5155, 5464)]