18395080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{431}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 27327800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 97, 110, 194, 220, 388, 431, 440, 485, 776, 862, 970, 1067, 1724, 1940, 2134, 2155, 3448, 3880, 4268, 4310, 4741, 5335, 8536, 8620, 9482, 10670, 17240, 18964, 21340, 23705, 37928, 41807, 42680, 47410, 83614, 94820, 167228, 189640, 209035, 334456, 418070, 459877, 836140, 919754, 1672280, 1839508, 2299385, 3679016, 4598770, 9197540, 18395080]

約数ペア:

[(1, 18395080), (2, 9197540), (4, 4598770), (5, 3679016), (8, 2299385), (10, 1839508), (11, 1672280), (20, 919754), (22, 836140), (40, 459877), (44, 418070), (55, 334456), (88, 209035), (97, 189640), (110, 167228), (194, 94820), (220, 83614), (388, 47410), (431, 42680), (440, 41807), (485, 37928), (776, 23705), (862, 21340), (970, 18964), (1067, 17240), (1724, 10670), (1940, 9482), (2134, 8620), (2155, 8536), (3448, 5335), (3880, 4741), (4268, 4310)]