20917080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{599}}^1$

素因数の和:713

約数の個数: 96

約数和(自身を含む): 68796000

約数和(自身を除く): 47878920

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, 599, 776, 873, 970, 1164, 1198, 1455, 1746, 1797, 1940, 2328, 2396, 2910, 2995, 3492, 3594, 3880, 4365, 4792, 5391, 5820, 5990, 6984, 7188, 8730, 8985, 10782, 11640, 11980, 14376, 17460, 17970, 21564, 23960, 26955, 34920, 35940, 43128, 53910, 58103, 71880, 107820, 116206, 174309, 215640, 232412, 290515, 348618, 464824, 522927, 581030, 697236, 871545, 1045854, 1162060, 1394472, 1743090, 2091708, 2324120, 2614635, 3486180, 4183416, 5229270, 6972360, 10458540, 20917080]

約数ペア:

[(1, 20917080), (2, 10458540), (3, 6972360), (4, 5229270), (5, 4183416), (6, 3486180), (8, 2614635), (9, 2324120), (10, 2091708), (12, 1743090), (15, 1394472), (18, 1162060), (20, 1045854), (24, 871545), (30, 697236), (36, 581030), (40, 522927), (45, 464824), (60, 348618), (72, 290515), (90, 232412), (97, 215640), (120, 174309), (180, 116206), (194, 107820), (291, 71880), (360, 58103), (388, 53910), (485, 43128), (582, 35940), (599, 34920), (776, 26955), (873, 23960), (970, 21564), (1164, 17970), (1198, 17460), (1455, 14376), (1746, 11980), (1797, 11640), (1940, 10782), (2328, 8985), (2396, 8730), (2910, 7188), (2995, 6984), (3492, 5990), (3594, 5820), (3880, 5391), (4365, 4792)]