20256520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29789}}^1$

素因数の和:29817

約数の個数: 32

約数和(自身を含む): 48259800

約数和(自身を除く): 28003280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 29789, 59578, 119156, 148945, 238312, 297890, 506413, 595780, 1012826, 1191560, 2025652, 2532065, 4051304, 5064130, 10128260, 20256520]

約数ペア:

[(1, 20256520), (2, 10128260), (4, 5064130), (5, 4051304), (8, 2532065), (10, 2025652), (17, 1191560), (20, 1012826), (34, 595780), (40, 506413), (68, 297890), (85, 238312), (136, 148945), (170, 119156), (340, 59578), (680, 29789)]