8690440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19751}}^1$

素因数の和:19773

約数の個数: 32

約数和(自身を含む): 21332160

約数和(自身を除く): 12641720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 19751, 39502, 79004, 98755, 158008, 197510, 217261, 395020, 434522, 790040, 869044, 1086305, 1738088, 2172610, 4345220, 8690440]

約数ペア:

[(1, 8690440), (2, 4345220), (4, 2172610), (5, 1738088), (8, 1086305), (10, 869044), (11, 790040), (20, 434522), (22, 395020), (40, 217261), (44, 197510), (55, 158008), (88, 98755), (110, 79004), (220, 39502), (440, 19751)]