20090080

素因数分解:

$2^5\times 5^1\times {\mathrm{307}}^1\times {\mathrm{409}}^1$

素因数の和:731

約数の個数: 48

約数和(自身を含む): 47733840

約数和(自身を除く): 27643760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 307, 409, 614, 818, 1228, 1535, 1636, 2045, 2456, 3070, 3272, 4090, 4912, 6140, 6544, 8180, 9824, 12280, 13088, 16360, 24560, 32720, 49120, 65440, 125563, 251126, 502252, 627815, 1004504, 1255630, 2009008, 2511260, 4018016, 5022520, 10045040, 20090080]

約数ペア:

[(1, 20090080), (2, 10045040), (4, 5022520), (5, 4018016), (8, 2511260), (10, 2009008), (16, 1255630), (20, 1004504), (32, 627815), (40, 502252), (80, 251126), (160, 125563), (307, 65440), (409, 49120), (614, 32720), (818, 24560), (1228, 16360), (1535, 13088), (1636, 12280), (2045, 9824), (2456, 8180), (3070, 6544), (3272, 6140), (4090, 4912)]