19540280

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2027}}^1$

素因数の和:2279

約数の個数: 32

約数和(自身を含む): 44169840

約数和(自身を除く): 24629560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2027, 2410, 4054, 4820, 8108, 9640, 10135, 16216, 20270, 40540, 81080, 488507, 977014, 1954028, 2442535, 3908056, 4885070, 9770140, 19540280]

約数ペア:

[(1, 19540280), (2, 9770140), (4, 4885070), (5, 3908056), (8, 2442535), (10, 1954028), (20, 977014), (40, 488507), (241, 81080), (482, 40540), (964, 20270), (1205, 16216), (1928, 10135), (2027, 9640), (2410, 8108), (4054, 4820)]