12921885

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 23662080

約数和(自身を除く): 10740195

約数列:

[1, 3, 5, 9, 15, 31, 45, 59, 93, 155, 157, 177, 279, 295, 465, 471, 531, 785, 885, 1395, 1413, 1829, 2355, 2655, 4867, 5487, 7065, 9145, 9263, 14601, 16461, 24335, 27435, 27789, 43803, 46315, 73005, 82305, 83367, 138945, 219015, 287153, 416835, 861459, 1435765, 2584377, 4307295, 12921885]

約数ペア:

[(1, 12921885), (3, 4307295), (5, 2584377), (9, 1435765), (15, 861459), (31, 416835), (45, 287153), (59, 219015), (93, 138945), (155, 83367), (157, 82305), (177, 73005), (279, 46315), (295, 43803), (465, 27789), (471, 27435), (531, 24335), (785, 16461), (885, 14601), (1395, 9263), (1413, 9145), (1829, 7065), (2355, 5487), (2655, 4867)]