19153640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{431}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 47589120

約数和(自身を除く): 28435480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 431, 440, 505, 808, 862, 1010, 1111, 1724, 2020, 2155, 2222, 3448, 4040, 4310, 4444, 4741, 5555, 8620, 8888, 9482, 11110, 17240, 18964, 22220, 23705, 37928, 43531, 44440, 47410, 87062, 94820, 174124, 189640, 217655, 348248, 435310, 478841, 870620, 957682, 1741240, 1915364, 2394205, 3830728, 4788410, 9576820, 19153640]

約数ペア:

[(1, 19153640), (2, 9576820), (4, 4788410), (5, 3830728), (8, 2394205), (10, 1915364), (11, 1741240), (20, 957682), (22, 870620), (40, 478841), (44, 435310), (55, 348248), (88, 217655), (101, 189640), (110, 174124), (202, 94820), (220, 87062), (404, 47410), (431, 44440), (440, 43531), (505, 37928), (808, 23705), (862, 22220), (1010, 18964), (1111, 17240), (1724, 11110), (2020, 9482), (2155, 8888), (2222, 8620), (3448, 5555), (4040, 4741), (4310, 4444)]