20857079265

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{79451}}^1$

素因数の和:79550

約数の個数: 64

約数和(自身を含む): 38258998272

約数和(自身を除く): 17401919007

約数列:

[1, 3, 5, 11, 15, 33, 37, 43, 55, 111, 129, 165, 185, 215, 407, 473, 555, 645, 1221, 1419, 1591, 2035, 2365, 4773, 6105, 7095, 7955, 17501, 23865, 52503, 79451, 87505, 238353, 262515, 397255, 873961, 1191765, 2621883, 2939687, 3416393, 4369805, 8819061, 10249179, 13109415, 14698435, 17081965, 32336557, 37580323, 44095305, 51245895, 97009671, 112740969, 126406541, 161682785, 187901615, 379219623, 485048355, 563704845, 632032705, 1390471951, 1896098115, 4171415853, 6952359755, 20857079265]

約数ペア:

[(1, 20857079265), (3, 6952359755), (5, 4171415853), (11, 1896098115), (15, 1390471951), (33, 632032705), (37, 563704845), (43, 485048355), (55, 379219623), (111, 187901615), (129, 161682785), (165, 126406541), (185, 112740969), (215, 97009671), (407, 51245895), (473, 44095305), (555, 37580323), (645, 32336557), (1221, 17081965), (1419, 14698435), (1591, 13109415), (2035, 10249179), (2365, 8819061), (4773, 4369805), (6105, 3416393), (7095, 2939687), (7955, 2621883), (17501, 1191765), (23865, 873961), (52503, 397255), (79451, 262515), (87505, 238353)]