19777768

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{523}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 38671200

約数和(自身を除く): 18893432

約数列:

[1, 2, 4, 8, 29, 58, 116, 163, 232, 326, 523, 652, 1046, 1304, 2092, 4184, 4727, 9454, 15167, 18908, 30334, 37816, 60668, 85249, 121336, 170498, 340996, 681992, 2472221, 4944442, 9888884, 19777768]

約数ペア:

[(1, 19777768), (2, 9888884), (4, 4944442), (8, 2472221), (29, 681992), (58, 340996), (116, 170498), (163, 121336), (232, 85249), (326, 60668), (523, 37816), (652, 30334), (1046, 18908), (1304, 15167), (2092, 9454), (4184, 4727)]