18214900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:625

約数の個数: 72

約数和(自身を含む): 44684640

約数和(自身を除く): 26469740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 29, 44, 50, 55, 58, 100, 110, 116, 145, 220, 275, 290, 319, 550, 571, 580, 638, 725, 1100, 1142, 1276, 1450, 1595, 2284, 2855, 2900, 3190, 5710, 6281, 6380, 7975, 11420, 12562, 14275, 15950, 16559, 25124, 28550, 31405, 31900, 33118, 57100, 62810, 66236, 82795, 125620, 157025, 165590, 182149, 314050, 331180, 364298, 413975, 628100, 728596, 827950, 910745, 1655900, 1821490, 3642980, 4553725, 9107450, 18214900]

約数ペア:

[(1, 18214900), (2, 9107450), (4, 4553725), (5, 3642980), (10, 1821490), (11, 1655900), (20, 910745), (22, 827950), (25, 728596), (29, 628100), (44, 413975), (50, 364298), (55, 331180), (58, 314050), (100, 182149), (110, 165590), (116, 157025), (145, 125620), (220, 82795), (275, 66236), (290, 62810), (319, 57100), (550, 33118), (571, 31900), (580, 31405), (638, 28550), (725, 25124), (1100, 16559), (1142, 15950), (1276, 14275), (1450, 12562), (1595, 11420), (2284, 7975), (2855, 6380), (2900, 6281), (3190, 5710)]