20821736

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{11777}}^1$

素因数の和:11813

約数の個数: 32

約数和(自身を含む): 44520840

約数和(自身を除く): 23699104

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 11777, 23554, 47108, 94216, 153101, 200209, 306202, 400418, 612404, 800836, 1224808, 1601672, 2602717, 5205434, 10410868, 20821736]

約数ペア:

[(1, 20821736), (2, 10410868), (4, 5205434), (8, 2602717), (13, 1601672), (17, 1224808), (26, 800836), (34, 612404), (52, 400418), (68, 306202), (104, 200209), (136, 153101), (221, 94216), (442, 47108), (884, 23554), (1768, 11777)]