21010020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3467}}^1$

素因数の和:3580

約数の個数: 48

約数和(自身を含む): 59427648

約数和(自身を除く): 38417628

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 101, 202, 303, 404, 505, 606, 1010, 1212, 1515, 2020, 3030, 3467, 6060, 6934, 10401, 13868, 17335, 20802, 34670, 41604, 52005, 69340, 104010, 208020, 350167, 700334, 1050501, 1400668, 1750835, 2101002, 3501670, 4202004, 5252505, 7003340, 10505010, 21010020]

約数ペア:

[(1, 21010020), (2, 10505010), (3, 7003340), (4, 5252505), (5, 4202004), (6, 3501670), (10, 2101002), (12, 1750835), (15, 1400668), (20, 1050501), (30, 700334), (60, 350167), (101, 208020), (202, 104010), (303, 69340), (404, 52005), (505, 41604), (606, 34670), (1010, 20802), (1212, 17335), (1515, 13868), (2020, 10401), (3030, 6934), (3467, 6060)]