19109985

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 12823455

約数列:

[1, 3, 5, 15, 29, 87, 145, 197, 223, 435, 591, 669, 985, 1115, 2955, 3345, 5713, 6467, 17139, 19401, 28565, 32335, 43931, 85695, 97005, 131793, 219655, 658965, 1273999, 3821997, 6369995, 19109985]

約数ペア:

[(1, 19109985), (3, 6369995), (5, 3821997), (15, 1273999), (29, 658965), (87, 219655), (145, 131793), (197, 97005), (223, 85695), (435, 43931), (591, 32335), (669, 28565), (985, 19401), (1115, 17139), (2955, 6467), (3345, 5713)]