21083870

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^2\times {\mathrm{109}}^1$

素因数の和:197

約数の個数: 48

約数和(自身を含む): 41389920

約数和(自身を除く): 20306050

約数列:

[1, 2, 5, 10, 23, 29, 46, 58, 109, 115, 145, 218, 230, 290, 545, 667, 841, 1090, 1334, 1682, 2507, 3161, 3335, 4205, 5014, 6322, 6670, 8410, 12535, 15805, 19343, 25070, 31610, 38686, 72703, 91669, 96715, 145406, 183338, 193430, 363515, 458345, 727030, 916690, 2108387, 4216774, 10541935, 21083870]

約数ペア:

[(1, 21083870), (2, 10541935), (5, 4216774), (10, 2108387), (23, 916690), (29, 727030), (46, 458345), (58, 363515), (109, 193430), (115, 183338), (145, 145406), (218, 96715), (230, 91669), (290, 72703), (545, 38686), (667, 31610), (841, 25070), (1090, 19343), (1334, 15805), (1682, 12535), (2507, 8410), (3161, 6670), (3335, 6322), (4205, 5014)]