20784016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{439}}^1$

素因数の和:727

約数の個数: 40

約数和(自身を含む): 44193600

約数和(自身を除く): 23409584

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 269, 439, 538, 878, 1076, 1756, 2152, 2959, 3512, 4304, 4829, 5918, 7024, 9658, 11836, 19316, 23672, 38632, 47344, 77264, 118091, 236182, 472364, 944728, 1299001, 1889456, 2598002, 5196004, 10392008, 20784016]

約数ペア:

[(1, 20784016), (2, 10392008), (4, 5196004), (8, 2598002), (11, 1889456), (16, 1299001), (22, 944728), (44, 472364), (88, 236182), (176, 118091), (269, 77264), (439, 47344), (538, 38632), (878, 23672), (1076, 19316), (1756, 11836), (2152, 9658), (2959, 7024), (3512, 5918), (4304, 4829)]