1680366940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^2\times {\mathrm{2381}}^1$

素因数の和:2539

約数の個数: 72

約数和(自身を含む): 4092199776

約数和(自身を除く): 2411832836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2381, 2485, 4762, 4970, 5041, 9524, 9940, 10082, 11905, 16667, 20164, 23810, 25205, 33334, 35287, 47620, 50410, 66668, 70574, 83335, 100820, 141148, 166670, 169051, 176435, 333340, 338102, 352870, 676204, 705740, 845255, 1183357, 1690510, 2366714, 3381020, 4733428, 5916785, 11833570, 12002621, 23667140, 24005242, 48010484, 60013105, 84018347, 120026210, 168036694, 240052420, 336073388, 420091735, 840183470, 1680366940]

約数ペア:

[(1, 1680366940), (2, 840183470), (4, 420091735), (5, 336073388), (7, 240052420), (10, 168036694), (14, 120026210), (20, 84018347), (28, 60013105), (35, 48010484), (70, 24005242), (71, 23667140), (140, 12002621), (142, 11833570), (284, 5916785), (355, 4733428), (497, 3381020), (710, 2366714), (994, 1690510), (1420, 1183357), (1988, 845255), (2381, 705740), (2485, 676204), (4762, 352870), (4970, 338102), (5041, 333340), (9524, 176435), (9940, 169051), (10082, 166670), (11905, 141148), (16667, 100820), (20164, 83335), (23810, 70574), (25205, 66668), (33334, 50410), (35287, 47620)]