18891586

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 36864000

約数和(自身を除く): 17972414

約数列:

[1, 2, 7, 14, 19, 29, 31, 38, 58, 62, 79, 133, 158, 203, 217, 266, 406, 434, 551, 553, 589, 899, 1102, 1106, 1178, 1501, 1798, 2291, 2449, 3002, 3857, 4123, 4582, 4898, 6293, 7714, 8246, 10507, 12586, 16037, 17081, 17143, 21014, 32074, 34162, 34286, 43529, 46531, 71021, 87058, 93062, 119567, 142042, 239134, 304703, 325717, 497147, 609406, 651434, 994294, 1349399, 2698798, 9445793, 18891586]

約数ペア:

[(1, 18891586), (2, 9445793), (7, 2698798), (14, 1349399), (19, 994294), (29, 651434), (31, 609406), (38, 497147), (58, 325717), (62, 304703), (79, 239134), (133, 142042), (158, 119567), (203, 93062), (217, 87058), (266, 71021), (406, 46531), (434, 43529), (551, 34286), (553, 34162), (589, 32074), (899, 21014), (1102, 17143), (1106, 17081), (1178, 16037), (1501, 12586), (1798, 10507), (2291, 8246), (2449, 7714), (3002, 6293), (3857, 4898), (4123, 4582)]