21994310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{461}}^1$

素因数の和:848

約数の個数: 32

約数和(自身を含む): 42844032

約数和(自身を除く): 20849722

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 367, 461, 734, 922, 1835, 2305, 3670, 4610, 4771, 5993, 9542, 11986, 23855, 29965, 47710, 59930, 169187, 338374, 845935, 1691870, 2199431, 4398862, 10997155, 21994310]

約数ペア:

[(1, 21994310), (2, 10997155), (5, 4398862), (10, 2199431), (13, 1691870), (26, 845935), (65, 338374), (130, 169187), (367, 59930), (461, 47710), (734, 29965), (922, 23855), (1835, 11986), (2305, 9542), (3670, 5993), (4610, 4771)]