20986920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{601}}^1$

素因数の和:715

約数の個数: 96

約数和(自身を含む): 69025320

約数和(自身を除く): 48038400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 97, 120, 180, 194, 291, 360, 388, 485, 582, 601, 776, 873, 970, 1164, 1202, 1455, 1746, 1803, 1940, 2328, 2404, 2910, 3005, 3492, 3606, 3880, 4365, 4808, 5409, 5820, 6010, 6984, 7212, 8730, 9015, 10818, 11640, 12020, 14424, 17460, 18030, 21636, 24040, 27045, 34920, 36060, 43272, 54090, 58297, 72120, 108180, 116594, 174891, 216360, 233188, 291485, 349782, 466376, 524673, 582970, 699564, 874455, 1049346, 1165940, 1399128, 1748910, 2098692, 2331880, 2623365, 3497820, 4197384, 5246730, 6995640, 10493460, 20986920]

約数ペア:

[(1, 20986920), (2, 10493460), (3, 6995640), (4, 5246730), (5, 4197384), (6, 3497820), (8, 2623365), (9, 2331880), (10, 2098692), (12, 1748910), (15, 1399128), (18, 1165940), (20, 1049346), (24, 874455), (30, 699564), (36, 582970), (40, 524673), (45, 466376), (60, 349782), (72, 291485), (90, 233188), (97, 216360), (120, 174891), (180, 116594), (194, 108180), (291, 72120), (360, 58297), (388, 54090), (485, 43272), (582, 36060), (601, 34920), (776, 27045), (873, 24040), (970, 21636), (1164, 18030), (1202, 17460), (1455, 14424), (1746, 12020), (1803, 11640), (1940, 10818), (2328, 9015), (2404, 8730), (2910, 7212), (3005, 6984), (3492, 6010), (3606, 5820), (3880, 5409), (4365, 4808)]