18992272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91309}}^1$

素因数の和:91330

約数の個数: 20

約数和(自身を含む): 39628540

約数和(自身を除く): 20636268

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91309, 182618, 365236, 730472, 1187017, 1460944, 2374034, 4748068, 9496136, 18992272]

約数ペア:

[(1, 18992272), (2, 9496136), (4, 4748068), (8, 2374034), (13, 1460944), (16, 1187017), (26, 730472), (52, 365236), (104, 182618), (208, 91309)]