209897860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{255973}}^1$

素因数の和:256023

約数の個数: 24

約数和(自身を含む): 451538136

約数和(自身を除く): 241640276

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 255973, 511946, 1023892, 1279865, 2559730, 5119460, 10494893, 20989786, 41979572, 52474465, 104948930, 209897860]

約数ペア:

[(1, 209897860), (2, 104948930), (4, 52474465), (5, 41979572), (10, 20989786), (20, 10494893), (41, 5119460), (82, 2559730), (164, 1279865), (205, 1023892), (410, 511946), (820, 255973)]