20788020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10499}}^1$

素因数の和:10525

約数の個数: 72

約数和(自身を含む): 68796000

約数和(自身を除く): 48007980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10499, 20998, 31497, 41996, 52495, 62994, 94491, 104990, 115489, 125988, 157485, 188982, 209980, 230978, 314970, 346467, 377964, 461956, 472455, 577445, 629940, 692934, 944910, 1039401, 1154890, 1385868, 1732335, 1889820, 2078802, 2309780, 3464670, 4157604, 5197005, 6929340, 10394010, 20788020]

約数ペア:

[(1, 20788020), (2, 10394010), (3, 6929340), (4, 5197005), (5, 4157604), (6, 3464670), (9, 2309780), (10, 2078802), (11, 1889820), (12, 1732335), (15, 1385868), (18, 1154890), (20, 1039401), (22, 944910), (30, 692934), (33, 629940), (36, 577445), (44, 472455), (45, 461956), (55, 377964), (60, 346467), (66, 314970), (90, 230978), (99, 209980), (110, 188982), (132, 157485), (165, 125988), (180, 115489), (198, 104990), (220, 94491), (330, 62994), (396, 52495), (495, 41996), (660, 31497), (990, 20998), (1980, 10499)]