19990140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1579}}^1$

素因数の和:1802

約数の個数: 48

約数和(自身を含む): 56273280

約数和(自身を除く): 36283140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 211, 422, 633, 844, 1055, 1266, 1579, 2110, 2532, 3158, 3165, 4220, 4737, 6316, 6330, 7895, 9474, 12660, 15790, 18948, 23685, 31580, 47370, 94740, 333169, 666338, 999507, 1332676, 1665845, 1999014, 3331690, 3998028, 4997535, 6663380, 9995070, 19990140]

約数ペア:

[(1, 19990140), (2, 9995070), (3, 6663380), (4, 4997535), (5, 3998028), (6, 3331690), (10, 1999014), (12, 1665845), (15, 1332676), (20, 999507), (30, 666338), (60, 333169), (211, 94740), (422, 47370), (633, 31580), (844, 23685), (1055, 18948), (1266, 15790), (1579, 12660), (2110, 9474), (2532, 7895), (3158, 6330), (3165, 6316), (4220, 4737)]