18900640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10739}}^1$

素因数の和:10765

約数の個数: 48

約数和(自身を含む): 48716640

約数和(自身を除く): 29816000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 10739, 21478, 42956, 53695, 85912, 107390, 118129, 171824, 214780, 236258, 343648, 429560, 472516, 590645, 859120, 945032, 1181290, 1718240, 1890064, 2362580, 3780128, 4725160, 9450320, 18900640]

約数ペア:

[(1, 18900640), (2, 9450320), (4, 4725160), (5, 3780128), (8, 2362580), (10, 1890064), (11, 1718240), (16, 1181290), (20, 945032), (22, 859120), (32, 590645), (40, 472516), (44, 429560), (55, 343648), (80, 236258), (88, 214780), (110, 171824), (160, 118129), (176, 107390), (220, 85912), (352, 53695), (440, 42956), (880, 21478), (1760, 10739)]