18696920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3863}}^1$

素因数の和:3896

約数の個数: 48

約数和(自身を含む): 46252080

約数和(自身を除く): 27555160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 3863, 4840, 7726, 15452, 19315, 30904, 38630, 42493, 77260, 84986, 154520, 169972, 212465, 339944, 424930, 467423, 849860, 934846, 1699720, 1869692, 2337115, 3739384, 4674230, 9348460, 18696920]

約数ペア:

[(1, 18696920), (2, 9348460), (4, 4674230), (5, 3739384), (8, 2337115), (10, 1869692), (11, 1699720), (20, 934846), (22, 849860), (40, 467423), (44, 424930), (55, 339944), (88, 212465), (110, 169972), (121, 154520), (220, 84986), (242, 77260), (440, 42493), (484, 38630), (605, 30904), (968, 19315), (1210, 15452), (2420, 7726), (3863, 4840)]