19115005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1$

素因数の和:1045

約数の個数: 32

約数和(自身を含む): 28917504

約数和(自身を除く): 9802499

約数列:

[1, 5, 7, 13, 35, 43, 65, 91, 215, 301, 455, 559, 977, 1505, 2795, 3913, 4885, 6839, 12701, 19565, 34195, 42011, 63505, 88907, 210055, 294077, 444535, 546143, 1470385, 2730715, 3823001, 19115005]

約数ペア:

[(1, 19115005), (5, 3823001), (7, 2730715), (13, 1470385), (35, 546143), (43, 444535), (65, 294077), (91, 210055), (215, 88907), (301, 63505), (455, 42011), (559, 34195), (977, 19565), (1505, 12701), (2795, 6839), (3913, 4885)]