19879790

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1399}}^1$

素因数の和:1449

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 23212210

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 203, 245, 290, 406, 490, 1015, 1399, 1421, 2030, 2798, 2842, 6995, 7105, 9793, 13990, 14210, 19586, 40571, 48965, 68551, 81142, 97930, 137102, 202855, 283997, 342755, 405710, 567994, 685510, 1419985, 1987979, 2839970, 3975958, 9939895, 19879790]

約数ペア:

[(1, 19879790), (2, 9939895), (5, 3975958), (7, 2839970), (10, 1987979), (14, 1419985), (29, 685510), (35, 567994), (49, 405710), (58, 342755), (70, 283997), (98, 202855), (145, 137102), (203, 97930), (245, 81142), (290, 68551), (406, 48965), (490, 40571), (1015, 19586), (1399, 14210), (1421, 13990), (2030, 9793), (2798, 7105), (2842, 6995)]