1229440780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1982969}}^1$

素因数の和:1983009

約数の個数: 24

約数和(自身を含む): 2665111680

約数和(自身を除く): 1435670900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1982969, 3965938, 7931876, 9914845, 19829690, 39659380, 61472039, 122944078, 245888156, 307360195, 614720390, 1229440780]

約数ペア:

[(1, 1229440780), (2, 614720390), (4, 307360195), (5, 245888156), (10, 122944078), (20, 61472039), (31, 39659380), (62, 19829690), (124, 9914845), (155, 7931876), (310, 3965938), (620, 1982969)]