217880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 529200

約数和(自身を除く): 311320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 419, 520, 838, 1676, 2095, 3352, 4190, 5447, 8380, 10894, 16760, 21788, 27235, 43576, 54470, 108940, 217880]

約数ペア:

[(1, 217880), (2, 108940), (4, 54470), (5, 43576), (8, 27235), (10, 21788), (13, 16760), (20, 10894), (26, 8380), (40, 5447), (52, 4190), (65, 3352), (104, 2095), (130, 1676), (260, 838), (419, 520)]