21990744

素因数分解:

$2^3\times 3^3\times {\mathrm{61}}^1\times {\mathrm{1669}}^1$

素因数の和:1745

約数の個数: 64

約数和(自身を含む): 62124000

約数和(自身を除く): 40133256

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 61, 72, 108, 122, 183, 216, 244, 366, 488, 549, 732, 1098, 1464, 1647, 1669, 2196, 3294, 3338, 4392, 5007, 6588, 6676, 10014, 13176, 13352, 15021, 20028, 30042, 40056, 45063, 60084, 90126, 101809, 120168, 180252, 203618, 305427, 360504, 407236, 610854, 814472, 916281, 1221708, 1832562, 2443416, 2748843, 3665124, 5497686, 7330248, 10995372, 21990744]

約数ペア:

[(1, 21990744), (2, 10995372), (3, 7330248), (4, 5497686), (6, 3665124), (8, 2748843), (9, 2443416), (12, 1832562), (18, 1221708), (24, 916281), (27, 814472), (36, 610854), (54, 407236), (61, 360504), (72, 305427), (108, 203618), (122, 180252), (183, 120168), (216, 101809), (244, 90126), (366, 60084), (488, 45063), (549, 40056), (732, 30042), (1098, 20028), (1464, 15021), (1647, 13352), (1669, 13176), (2196, 10014), (3294, 6676), (3338, 6588), (4392, 5007)]