20326384

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1237}}^1$

素因数の和:1337

約数の個数: 40

約数和(自身を含む): 42983360

約数和(自身を除く): 22656976

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 79, 104, 158, 208, 316, 632, 1027, 1237, 1264, 2054, 2474, 4108, 4948, 8216, 9896, 16081, 16432, 19792, 32162, 64324, 97723, 128648, 195446, 257296, 390892, 781784, 1270399, 1563568, 2540798, 5081596, 10163192, 20326384]

約数ペア:

[(1, 20326384), (2, 10163192), (4, 5081596), (8, 2540798), (13, 1563568), (16, 1270399), (26, 781784), (52, 390892), (79, 257296), (104, 195446), (158, 128648), (208, 97723), (316, 64324), (632, 32162), (1027, 19792), (1237, 16432), (1264, 16081), (2054, 9896), (2474, 8216), (4108, 4948)]