21406100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 28465708

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 41, 46, 50, 82, 92, 100, 115, 164, 205, 227, 230, 410, 454, 460, 575, 820, 908, 943, 1025, 1135, 1150, 1886, 2050, 2270, 2300, 3772, 4100, 4540, 4715, 5221, 5675, 9307, 9430, 10442, 11350, 18614, 18860, 20884, 22700, 23575, 26105, 37228, 46535, 47150, 52210, 93070, 94300, 104420, 130525, 186140, 214061, 232675, 261050, 428122, 465350, 522100, 856244, 930700, 1070305, 2140610, 4281220, 5351525, 10703050, 21406100]

約数ペア:

[(1, 21406100), (2, 10703050), (4, 5351525), (5, 4281220), (10, 2140610), (20, 1070305), (23, 930700), (25, 856244), (41, 522100), (46, 465350), (50, 428122), (82, 261050), (92, 232675), (100, 214061), (115, 186140), (164, 130525), (205, 104420), (227, 94300), (230, 93070), (410, 52210), (454, 47150), (460, 46535), (575, 37228), (820, 26105), (908, 23575), (943, 22700), (1025, 20884), (1135, 18860), (1150, 18614), (1886, 11350), (2050, 10442), (2270, 9430), (2300, 9307), (3772, 5675), (4100, 5221), (4540, 4715)]