20492888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 44724960

約数和(自身を除く): 24232072

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 67, 68, 104, 134, 136, 173, 221, 268, 346, 442, 536, 692, 871, 884, 1139, 1384, 1742, 1768, 2249, 2278, 2941, 3484, 4498, 4556, 5882, 6968, 8996, 9112, 11591, 11764, 14807, 17992, 23182, 23528, 29614, 38233, 46364, 59228, 76466, 92728, 118456, 150683, 152932, 197047, 301366, 305864, 394094, 602732, 788188, 1205464, 1576376, 2561611, 5123222, 10246444, 20492888]

約数ペア:

[(1, 20492888), (2, 10246444), (4, 5123222), (8, 2561611), (13, 1576376), (17, 1205464), (26, 788188), (34, 602732), (52, 394094), (67, 305864), (68, 301366), (104, 197047), (134, 152932), (136, 150683), (173, 118456), (221, 92728), (268, 76466), (346, 59228), (442, 46364), (536, 38233), (692, 29614), (871, 23528), (884, 23182), (1139, 17992), (1384, 14807), (1742, 11764), (1768, 11591), (2249, 9112), (2278, 8996), (2941, 6968), (3484, 5882), (4498, 4556)]