20966600

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1327}}^1$

素因数の和:1422

約数の個数: 48

約数和(自身を含む): 49401600

約数和(自身を除く): 28435000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1327, 1580, 1975, 2654, 3160, 3950, 5308, 6635, 7900, 10616, 13270, 15800, 26540, 33175, 53080, 66350, 104833, 132700, 209666, 265400, 419332, 524165, 838664, 1048330, 2096660, 2620825, 4193320, 5241650, 10483300, 20966600]

約数ペア:

[(1, 20966600), (2, 10483300), (4, 5241650), (5, 4193320), (8, 2620825), (10, 2096660), (20, 1048330), (25, 838664), (40, 524165), (50, 419332), (79, 265400), (100, 209666), (158, 132700), (200, 104833), (316, 66350), (395, 53080), (632, 33175), (790, 26540), (1327, 15800), (1580, 13270), (1975, 10616), (2654, 7900), (3160, 6635), (3950, 5308)]