328960040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{115831}}^1$

素因数の和:115913

約数の個数: 32

約数和(自身を含む): 750591360

約数和(自身を除く): 421631320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 115831, 231662, 463324, 579155, 926648, 1158310, 2316620, 4633240, 8224001, 16448002, 32896004, 41120005, 65792008, 82240010, 164480020, 328960040]

約数ペア:

[(1, 328960040), (2, 164480020), (4, 82240010), (5, 65792008), (8, 41120005), (10, 32896004), (20, 16448002), (40, 8224001), (71, 4633240), (142, 2316620), (284, 1158310), (355, 926648), (568, 579155), (710, 463324), (1420, 231662), (2840, 115831)]