28399880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17317}}^1$

素因数の和:17369

約数の個数: 32

約数和(自身を含む): 65462040

約数和(自身を除く): 37062160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17317, 34634, 69268, 86585, 138536, 173170, 346340, 692680, 709997, 1419994, 2839988, 3549985, 5679976, 7099970, 14199940, 28399880]

約数ペア:

[(1, 28399880), (2, 14199940), (4, 7099970), (5, 5679976), (8, 3549985), (10, 2839988), (20, 1419994), (40, 709997), (41, 692680), (82, 346340), (164, 173170), (205, 138536), (328, 86585), (410, 69268), (820, 34634), (1640, 17317)]