21092860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{887}}^1$

素因数の和:966

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 25900100

約数列:

[1, 2, 4, 5, 10, 20, 29, 41, 58, 82, 116, 145, 164, 205, 290, 410, 580, 820, 887, 1189, 1774, 2378, 3548, 4435, 4756, 5945, 8870, 11890, 17740, 23780, 25723, 36367, 51446, 72734, 102892, 128615, 145468, 181835, 257230, 363670, 514460, 727340, 1054643, 2109286, 4218572, 5273215, 10546430, 21092860]

約数ペア:

[(1, 21092860), (2, 10546430), (4, 5273215), (5, 4218572), (10, 2109286), (20, 1054643), (29, 727340), (41, 514460), (58, 363670), (82, 257230), (116, 181835), (145, 145468), (164, 128615), (205, 102892), (290, 72734), (410, 51446), (580, 36367), (820, 25723), (887, 23780), (1189, 17740), (1774, 11890), (2378, 8870), (3548, 5945), (4435, 4756)]