81258940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{8663}}^1$

素因数の和:8746

約数の個数: 48

約数和(自身を含む): 197955072

約数和(自身を除く): 116696132

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2345, 4690, 8663, 9380, 17326, 34652, 43315, 60641, 86630, 121282, 173260, 242564, 303205, 580421, 606410, 1160842, 1212820, 2321684, 2902105, 4062947, 5804210, 8125894, 11608420, 16251788, 20314735, 40629470, 81258940]

約数ペア:

[(1, 81258940), (2, 40629470), (4, 20314735), (5, 16251788), (7, 11608420), (10, 8125894), (14, 5804210), (20, 4062947), (28, 2902105), (35, 2321684), (67, 1212820), (70, 1160842), (134, 606410), (140, 580421), (268, 303205), (335, 242564), (469, 173260), (670, 121282), (938, 86630), (1340, 60641), (1876, 43315), (2345, 34652), (4690, 17326), (8663, 9380)]