281701520

素因数分解:

$2^4\times 5^1\times {\mathrm{821}}^1\times {\mathrm{4289}}^1$

素因数の和:5123

約数の個数: 40

約数和(自身を含む): 655906680

約数和(自身を除く): 374205160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 821, 1642, 3284, 4105, 4289, 6568, 8210, 8578, 13136, 16420, 17156, 21445, 32840, 34312, 42890, 65680, 68624, 85780, 171560, 343120, 3521269, 7042538, 14085076, 17606345, 28170152, 35212690, 56340304, 70425380, 140850760, 281701520]

約数ペア:

[(1, 281701520), (2, 140850760), (4, 70425380), (5, 56340304), (8, 35212690), (10, 28170152), (16, 17606345), (20, 14085076), (40, 7042538), (80, 3521269), (821, 343120), (1642, 171560), (3284, 85780), (4105, 68624), (4289, 65680), (6568, 42890), (8210, 34312), (8578, 32840), (13136, 21445), (16420, 17156)]