18215678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{367}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 31159296

約数和(自身を除く): 12943618

約数列:

[1, 2, 13, 23, 26, 46, 83, 166, 299, 367, 598, 734, 1079, 1909, 2158, 3818, 4771, 8441, 9542, 16882, 24817, 30461, 49634, 60922, 109733, 219466, 395993, 700603, 791986, 1401206, 9107839, 18215678]

約数ペア:

[(1, 18215678), (2, 9107839), (13, 1401206), (23, 791986), (26, 700603), (46, 395993), (83, 219466), (166, 109733), (299, 60922), (367, 49634), (598, 30461), (734, 24817), (1079, 16882), (1909, 9542), (2158, 8441), (3818, 4771)]