20823080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12697}}^1$

素因数の和:12749

約数の個数: 32

約数和(自身を含む): 47998440

約数和(自身を除く): 27175360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12697, 25394, 50788, 63485, 101576, 126970, 253940, 507880, 520577, 1041154, 2082308, 2602885, 4164616, 5205770, 10411540, 20823080]

約数ペア:

[(1, 20823080), (2, 10411540), (4, 5205770), (5, 4164616), (8, 2602885), (10, 2082308), (20, 1041154), (40, 520577), (41, 507880), (82, 253940), (164, 126970), (205, 101576), (328, 63485), (410, 50788), (820, 25394), (1640, 12697)]