20880198

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{509}}^1$

素因数の和:613

約数の個数: 48

約数和(自身を含む): 47258640

約数和(自身を除く): 26378442

約数列:

[1, 2, 3, 6, 9, 18, 43, 53, 86, 106, 129, 159, 258, 318, 387, 477, 509, 774, 954, 1018, 1527, 2279, 3054, 4558, 4581, 6837, 9162, 13674, 20511, 21887, 26977, 41022, 43774, 53954, 65661, 80931, 131322, 161862, 196983, 242793, 393966, 485586, 1160011, 2320022, 3480033, 6960066, 10440099, 20880198]

約数ペア:

[(1, 20880198), (2, 10440099), (3, 6960066), (6, 3480033), (9, 2320022), (18, 1160011), (43, 485586), (53, 393966), (86, 242793), (106, 196983), (129, 161862), (159, 131322), (258, 80931), (318, 65661), (387, 53954), (477, 43774), (509, 41022), (774, 26977), (954, 21887), (1018, 20511), (1527, 13674), (2279, 9162), (3054, 6837), (4558, 4581)]