990012

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 2564352

約数和(自身を除く): 1574340

約数列:

[1, 2, 3, 4, 6, 12, 17, 23, 34, 46, 51, 68, 69, 92, 102, 138, 204, 211, 276, 391, 422, 633, 782, 844, 1173, 1266, 1564, 2346, 2532, 3587, 4692, 4853, 7174, 9706, 10761, 14348, 14559, 19412, 21522, 29118, 43044, 58236, 82501, 165002, 247503, 330004, 495006, 990012]

約数ペア:

[(1, 990012), (2, 495006), (3, 330004), (4, 247503), (6, 165002), (12, 82501), (17, 58236), (23, 43044), (34, 29118), (46, 21522), (51, 19412), (68, 14559), (69, 14348), (92, 10761), (102, 9706), (138, 7174), (204, 4853), (211, 4692), (276, 3587), (391, 2532), (422, 2346), (633, 1564), (782, 1266), (844, 1173)]