21131236

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 22898204

約数列:

[1, 2, 4, 7, 14, 28, 41, 79, 82, 158, 164, 233, 287, 316, 466, 553, 574, 932, 1106, 1148, 1631, 2212, 3239, 3262, 6478, 6524, 9553, 12956, 18407, 19106, 22673, 36814, 38212, 45346, 66871, 73628, 90692, 128849, 133742, 257698, 267484, 515396, 754687, 1509374, 3018748, 5282809, 10565618, 21131236]

約数ペア:

[(1, 21131236), (2, 10565618), (4, 5282809), (7, 3018748), (14, 1509374), (28, 754687), (41, 515396), (79, 267484), (82, 257698), (158, 133742), (164, 128849), (233, 90692), (287, 73628), (316, 66871), (466, 45346), (553, 38212), (574, 36814), (932, 22673), (1106, 19106), (1148, 18407), (1631, 12956), (2212, 9553), (3239, 6524), (3262, 6478)]