19616401

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^2\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 24312960

約数和(自身を除く): 4696559

約数列:

[1, 7, 23, 37, 89, 161, 259, 623, 851, 1369, 2047, 3293, 5957, 9583, 14329, 23051, 31487, 75739, 121841, 220409, 530173, 852887, 2802343, 19616401]

約数ペア:

[(1, 19616401), (7, 2802343), (23, 852887), (37, 530173), (89, 220409), (161, 121841), (259, 75739), (623, 31487), (851, 23051), (1369, 14329), (2047, 9583), (3293, 5957)]