729880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 1671840

約数和(自身を除く): 941960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 257, 284, 355, 514, 568, 710, 1028, 1285, 1420, 2056, 2570, 2840, 5140, 10280, 18247, 36494, 72988, 91235, 145976, 182470, 364940, 729880]

約数ペア:

[(1, 729880), (2, 364940), (4, 182470), (5, 145976), (8, 91235), (10, 72988), (20, 36494), (40, 18247), (71, 10280), (142, 5140), (257, 2840), (284, 2570), (355, 2056), (514, 1420), (568, 1285), (710, 1028)]