256530890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{977}}^1$

素因数の和:1044

約数の個数: 96

約数和(自身を含む): 599380992

約数和(自身を除く): 342850102

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 31, 35, 55, 62, 70, 77, 110, 121, 154, 155, 217, 242, 310, 341, 385, 434, 605, 682, 770, 847, 977, 1085, 1210, 1694, 1705, 1954, 2170, 2387, 3410, 3751, 4235, 4774, 4885, 6839, 7502, 8470, 9770, 10747, 11935, 13678, 18755, 21494, 23870, 26257, 30287, 34195, 37510, 52514, 53735, 60574, 68390, 75229, 107470, 118217, 131285, 150458, 151435, 212009, 236434, 262570, 302870, 333157, 376145, 424018, 591085, 666314, 752290, 827519, 1060045, 1182170, 1655038, 1665785, 2120090, 2332099, 3331570, 3664727, 4137595, 4664198, 7329454, 8275190, 11660495, 18323635, 23320990, 25653089, 36647270, 51306178, 128265445, 256530890]

約数ペア:

[(1, 256530890), (2, 128265445), (5, 51306178), (7, 36647270), (10, 25653089), (11, 23320990), (14, 18323635), (22, 11660495), (31, 8275190), (35, 7329454), (55, 4664198), (62, 4137595), (70, 3664727), (77, 3331570), (110, 2332099), (121, 2120090), (154, 1665785), (155, 1655038), (217, 1182170), (242, 1060045), (310, 827519), (341, 752290), (385, 666314), (434, 591085), (605, 424018), (682, 376145), (770, 333157), (847, 302870), (977, 262570), (1085, 236434), (1210, 212009), (1694, 151435), (1705, 150458), (1954, 131285), (2170, 118217), (2387, 107470), (3410, 75229), (3751, 68390), (4235, 60574), (4774, 53735), (4885, 52514), (6839, 37510), (7502, 34195), (8470, 30287), (9770, 26257), (10747, 23870), (11935, 21494), (13678, 18755)]