1999280

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{373}}^1$

素因数の和:453

約数の個数: 40

約数和(自身を含む): 4730352

約数和(自身を除く): 2731072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 373, 536, 670, 746, 1072, 1340, 1492, 1865, 2680, 2984, 3730, 5360, 5968, 7460, 14920, 24991, 29840, 49982, 99964, 124955, 199928, 249910, 399856, 499820, 999640, 1999280]

約数ペア:

[(1, 1999280), (2, 999640), (4, 499820), (5, 399856), (8, 249910), (10, 199928), (16, 124955), (20, 99964), (40, 49982), (67, 29840), (80, 24991), (134, 14920), (268, 7460), (335, 5968), (373, 5360), (536, 3730), (670, 2984), (746, 2680), (1072, 1865), (1340, 1492)]