19902390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2897}}^1$

素因数の和:3136

約数の個数: 32

約数和(自身を含む): 47990880

約数和(自身を除く): 28088490

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 229, 458, 687, 1145, 1374, 2290, 2897, 3435, 5794, 6870, 8691, 14485, 17382, 28970, 43455, 86910, 663413, 1326826, 1990239, 3317065, 3980478, 6634130, 9951195, 19902390]

約数ペア:

[(1, 19902390), (2, 9951195), (3, 6634130), (5, 3980478), (6, 3317065), (10, 1990239), (15, 1326826), (30, 663413), (229, 86910), (458, 43455), (687, 28970), (1145, 17382), (1374, 14485), (2290, 8691), (2897, 6870), (3435, 5794)]