18557528

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1009}}^1$

素因数の和:1056

約数の個数: 48

約数和(自身を含む): 40299000

約数和(自身を除く): 21741472

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 121, 152, 209, 242, 418, 484, 836, 968, 1009, 1672, 2018, 2299, 4036, 4598, 8072, 9196, 11099, 18392, 19171, 22198, 38342, 44396, 76684, 88792, 122089, 153368, 210881, 244178, 421762, 488356, 843524, 976712, 1687048, 2319691, 4639382, 9278764, 18557528]

約数ペア:

[(1, 18557528), (2, 9278764), (4, 4639382), (8, 2319691), (11, 1687048), (19, 976712), (22, 843524), (38, 488356), (44, 421762), (76, 244178), (88, 210881), (121, 153368), (152, 122089), (209, 88792), (242, 76684), (418, 44396), (484, 38342), (836, 22198), (968, 19171), (1009, 18392), (1672, 11099), (2018, 9196), (2299, 8072), (4036, 4598)]