21276012

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{491}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 52238592

約数和(自身を除く): 30962580

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 157, 276, 314, 471, 491, 628, 942, 982, 1473, 1884, 1964, 2946, 3611, 5892, 7222, 10833, 11293, 14444, 21666, 22586, 33879, 43332, 45172, 67758, 77087, 135516, 154174, 231261, 308348, 462522, 925044, 1773001, 3546002, 5319003, 7092004, 10638006, 21276012]

約数ペア:

[(1, 21276012), (2, 10638006), (3, 7092004), (4, 5319003), (6, 3546002), (12, 1773001), (23, 925044), (46, 462522), (69, 308348), (92, 231261), (138, 154174), (157, 135516), (276, 77087), (314, 67758), (471, 45172), (491, 43332), (628, 33879), (942, 22586), (982, 21666), (1473, 14444), (1884, 11293), (1964, 10833), (2946, 7222), (3611, 5892)]