26558980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{661}}^1$

素因数の和:725

約数の個数: 72

約数和(自身を含む): 66562776

約数和(自身を除く): 40003796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 661, 820, 980, 1148, 1322, 1435, 2009, 2644, 2870, 3305, 4018, 4627, 5740, 6610, 8036, 9254, 10045, 13220, 18508, 20090, 23135, 27101, 32389, 40180, 46270, 54202, 64778, 92540, 108404, 129556, 135505, 161945, 189707, 271010, 323890, 379414, 542020, 647780, 758828, 948535, 1327949, 1897070, 2655898, 3794140, 5311796, 6639745, 13279490, 26558980]

約数ペア:

[(1, 26558980), (2, 13279490), (4, 6639745), (5, 5311796), (7, 3794140), (10, 2655898), (14, 1897070), (20, 1327949), (28, 948535), (35, 758828), (41, 647780), (49, 542020), (70, 379414), (82, 323890), (98, 271010), (140, 189707), (164, 161945), (196, 135505), (205, 129556), (245, 108404), (287, 92540), (410, 64778), (490, 54202), (574, 46270), (661, 40180), (820, 32389), (980, 27101), (1148, 23135), (1322, 20090), (1435, 18508), (2009, 13220), (2644, 10045), (2870, 9254), (3305, 8036), (4018, 6610), (4627, 5740)]