20849320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12713}}^1$

素因数の和:12765

約数の個数: 32

約数和(自身を含む): 48058920

約数和(自身を除く): 27209600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12713, 25426, 50852, 63565, 101704, 127130, 254260, 508520, 521233, 1042466, 2084932, 2606165, 4169864, 5212330, 10424660, 20849320]

約数ペア:

[(1, 20849320), (2, 10424660), (4, 5212330), (5, 4169864), (8, 2606165), (10, 2084932), (20, 1042466), (40, 521233), (41, 508520), (82, 254260), (164, 127130), (205, 101704), (328, 63565), (410, 50852), (820, 25426), (1640, 12713)]