21730148

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 25192252

約数列:

[1, 2, 4, 11, 17, 19, 22, 34, 38, 44, 68, 76, 121, 139, 187, 209, 242, 278, 323, 374, 418, 484, 556, 646, 748, 836, 1292, 1529, 2057, 2299, 2363, 2641, 3058, 3553, 4114, 4598, 4726, 5282, 6116, 7106, 8228, 9196, 9452, 10564, 14212, 16819, 25993, 29051, 33638, 39083, 44897, 51986, 58102, 67276, 78166, 89794, 103972, 116204, 156332, 179588, 285923, 319561, 493867, 571846, 639122, 987734, 1143692, 1278244, 1975468, 5432537, 10865074, 21730148]

約数ペア:

[(1, 21730148), (2, 10865074), (4, 5432537), (11, 1975468), (17, 1278244), (19, 1143692), (22, 987734), (34, 639122), (38, 571846), (44, 493867), (68, 319561), (76, 285923), (121, 179588), (139, 156332), (187, 116204), (209, 103972), (242, 89794), (278, 78166), (323, 67276), (374, 58102), (418, 51986), (484, 44897), (556, 39083), (646, 33638), (748, 29051), (836, 25993), (1292, 16819), (1529, 14212), (2057, 10564), (2299, 9452), (2363, 9196), (2641, 8228), (3058, 7106), (3553, 6116), (4114, 5282), (4598, 4726)]