397165480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{1283}}^1$

素因数の和:1474

約数の個数: 64

約数和(自身を含む): 915235200

約数和(自身を除く): 518069720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 109, 142, 218, 284, 355, 436, 545, 568, 710, 872, 1090, 1283, 1420, 2180, 2566, 2840, 4360, 5132, 6415, 7739, 10264, 12830, 15478, 25660, 30956, 38695, 51320, 61912, 77390, 91093, 139847, 154780, 182186, 279694, 309560, 364372, 455465, 559388, 699235, 728744, 910930, 1118776, 1398470, 1821860, 2796940, 3643720, 5593880, 9929137, 19858274, 39716548, 49645685, 79433096, 99291370, 198582740, 397165480]

約数ペア:

[(1, 397165480), (2, 198582740), (4, 99291370), (5, 79433096), (8, 49645685), (10, 39716548), (20, 19858274), (40, 9929137), (71, 5593880), (109, 3643720), (142, 2796940), (218, 1821860), (284, 1398470), (355, 1118776), (436, 910930), (545, 728744), (568, 699235), (710, 559388), (872, 455465), (1090, 364372), (1283, 309560), (1420, 279694), (2180, 182186), (2566, 154780), (2840, 139847), (4360, 91093), (5132, 77390), (6415, 61912), (7739, 51320), (10264, 38695), (12830, 30956), (15478, 25660)]