20181810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2659}}^1$

素因数の和:2703

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 34975950

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 23, 30, 33, 46, 55, 66, 69, 110, 115, 138, 165, 230, 253, 330, 345, 506, 690, 759, 1265, 1518, 2530, 2659, 3795, 5318, 7590, 7977, 13295, 15954, 26590, 29249, 39885, 58498, 61157, 79770, 87747, 122314, 146245, 175494, 183471, 292490, 305785, 366942, 438735, 611570, 672727, 877470, 917355, 1345454, 1834710, 2018181, 3363635, 4036362, 6727270, 10090905, 20181810]

約数ペア:

[(1, 20181810), (2, 10090905), (3, 6727270), (5, 4036362), (6, 3363635), (10, 2018181), (11, 1834710), (15, 1345454), (22, 917355), (23, 877470), (30, 672727), (33, 611570), (46, 438735), (55, 366942), (66, 305785), (69, 292490), (110, 183471), (115, 175494), (138, 146245), (165, 122314), (230, 87747), (253, 79770), (330, 61157), (345, 58498), (506, 39885), (690, 29249), (759, 26590), (1265, 15954), (1518, 13295), (2530, 7977), (2659, 7590), (3795, 5318)]