20358728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10303}}^1$

素因数の和:10341

約数の個数: 32

約数和(自身を含む): 43276800

約数和(自身を除く): 22918072

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10303, 20606, 41212, 82424, 133939, 195757, 267878, 391514, 535756, 783028, 1071512, 1566056, 2544841, 5089682, 10179364, 20358728]

約数ペア:

[(1, 20358728), (2, 10179364), (4, 5089682), (8, 2544841), (13, 1566056), (19, 1071512), (26, 783028), (38, 535756), (52, 391514), (76, 267878), (104, 195757), (152, 133939), (247, 82424), (494, 41212), (988, 20606), (1976, 10303)]