18785585

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 64

約数和(自身を含む): 30481920

約数和(自身を除く): 11696335

約数列:

[1, 5, 7, 13, 19, 35, 41, 53, 65, 91, 95, 133, 205, 247, 265, 287, 371, 455, 533, 665, 689, 779, 1007, 1235, 1435, 1729, 1855, 2173, 2665, 3445, 3731, 3895, 4823, 5035, 5453, 7049, 8645, 10127, 10865, 13091, 15211, 18655, 24115, 27265, 28249, 35245, 41287, 50635, 65455, 70889, 76055, 91637, 141245, 197743, 206435, 289009, 354445, 458185, 536731, 988715, 1445045, 2683655, 3757117, 18785585]

約数ペア:

[(1, 18785585), (5, 3757117), (7, 2683655), (13, 1445045), (19, 988715), (35, 536731), (41, 458185), (53, 354445), (65, 289009), (91, 206435), (95, 197743), (133, 141245), (205, 91637), (247, 76055), (265, 70889), (287, 65455), (371, 50635), (455, 41287), (533, 35245), (665, 28249), (689, 27265), (779, 24115), (1007, 18655), (1235, 15211), (1435, 13091), (1729, 10865), (1855, 10127), (2173, 8645), (2665, 7049), (3445, 5453), (3731, 5035), (3895, 4823)]