78761720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27733}}^1$

素因数の和:27815

約数の個数: 32

約数和(自身を含む): 179716320

約数和(自身を除く): 100954600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 27733, 55466, 110932, 138665, 221864, 277330, 554660, 1109320, 1969043, 3938086, 7876172, 9845215, 15752344, 19690430, 39380860, 78761720]

約数ペア:

[(1, 78761720), (2, 39380860), (4, 19690430), (5, 15752344), (8, 9845215), (10, 7876172), (20, 3938086), (40, 1969043), (71, 1109320), (142, 554660), (284, 277330), (355, 221864), (568, 138665), (710, 110932), (1420, 55466), (2840, 27733)]