20451728

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4007}}^1$

素因数の和:4055

約数の個数: 40

約数和(自身を含む): 44729280

約数和(自身を除く): 24277552

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 44, 58, 88, 116, 176, 232, 319, 464, 638, 1276, 2552, 4007, 5104, 8014, 16028, 32056, 44077, 64112, 88154, 116203, 176308, 232406, 352616, 464812, 705232, 929624, 1278233, 1859248, 2556466, 5112932, 10225864, 20451728]

約数ペア:

[(1, 20451728), (2, 10225864), (4, 5112932), (8, 2556466), (11, 1859248), (16, 1278233), (22, 929624), (29, 705232), (44, 464812), (58, 352616), (88, 232406), (116, 176308), (176, 116203), (232, 88154), (319, 64112), (464, 44077), (638, 32056), (1276, 16028), (2552, 8014), (4007, 5104)]