257868

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:71

約数の個数: 72

約数和(自身を含む): 764400

約数和(自身を除く): 506532

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 29, 36, 38, 39, 52, 57, 58, 76, 78, 87, 114, 116, 117, 156, 171, 174, 228, 234, 247, 261, 342, 348, 377, 468, 494, 522, 551, 684, 741, 754, 988, 1044, 1102, 1131, 1482, 1508, 1653, 2204, 2223, 2262, 2964, 3306, 3393, 4446, 4524, 4959, 6612, 6786, 7163, 8892, 9918, 13572, 14326, 19836, 21489, 28652, 42978, 64467, 85956, 128934, 257868]

約数ペア:

[(1, 257868), (2, 128934), (3, 85956), (4, 64467), (6, 42978), (9, 28652), (12, 21489), (13, 19836), (18, 14326), (19, 13572), (26, 9918), (29, 8892), (36, 7163), (38, 6786), (39, 6612), (52, 4959), (57, 4524), (58, 4446), (76, 3393), (78, 3306), (87, 2964), (114, 2262), (116, 2223), (117, 2204), (156, 1653), (171, 1508), (174, 1482), (228, 1131), (234, 1102), (247, 1044), (261, 988), (342, 754), (348, 741), (377, 684), (468, 551), (494, 522)]