21493020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8737}}^1$

素因数の和:8790

約数の個数: 48

約数和(自身を含む): 61655328

約数和(自身を除く): 40162308

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8737, 17474, 26211, 34948, 43685, 52422, 87370, 104844, 131055, 174740, 262110, 358217, 524220, 716434, 1074651, 1432868, 1791085, 2149302, 3582170, 4298604, 5373255, 7164340, 10746510, 21493020]

約数ペア:

[(1, 21493020), (2, 10746510), (3, 7164340), (4, 5373255), (5, 4298604), (6, 3582170), (10, 2149302), (12, 1791085), (15, 1432868), (20, 1074651), (30, 716434), (41, 524220), (60, 358217), (82, 262110), (123, 174740), (164, 131055), (205, 104844), (246, 87370), (410, 52422), (492, 43685), (615, 34948), (820, 26211), (1230, 17474), (2460, 8737)]