81401517

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:379

約数の個数: 40

約数和(自身を含む): 126408216

約数和(自身を除く): 45006699

約数列:

[1, 3, 9, 27, 37, 81, 111, 157, 173, 333, 471, 519, 999, 1413, 1557, 2997, 4239, 4671, 5809, 6401, 12717, 14013, 17427, 19203, 27161, 52281, 57609, 81483, 156843, 172827, 244449, 470529, 518481, 733347, 1004957, 2200041, 3014871, 9044613, 27133839, 81401517]

約数ペア:

[(1, 81401517), (3, 27133839), (9, 9044613), (27, 3014871), (37, 2200041), (81, 1004957), (111, 733347), (157, 518481), (173, 470529), (333, 244449), (471, 172827), (519, 156843), (999, 81483), (1413, 57609), (1557, 52281), (2997, 27161), (4239, 19203), (4671, 17427), (5809, 14013), (6401, 12717)]