21492520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1301}}^1$

素因数の和:1378

約数の個数: 64

約数和(自身を含む): 56246400

約数和(自身を除く): 34753880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 59, 70, 118, 140, 236, 280, 295, 413, 472, 590, 826, 1180, 1301, 1652, 2065, 2360, 2602, 3304, 4130, 5204, 6505, 8260, 9107, 10408, 13010, 16520, 18214, 26020, 36428, 45535, 52040, 72856, 76759, 91070, 153518, 182140, 307036, 364280, 383795, 537313, 614072, 767590, 1074626, 1535180, 2149252, 2686565, 3070360, 4298504, 5373130, 10746260, 21492520]

約数ペア:

[(1, 21492520), (2, 10746260), (4, 5373130), (5, 4298504), (7, 3070360), (8, 2686565), (10, 2149252), (14, 1535180), (20, 1074626), (28, 767590), (35, 614072), (40, 537313), (56, 383795), (59, 364280), (70, 307036), (118, 182140), (140, 153518), (236, 91070), (280, 76759), (295, 72856), (413, 52040), (472, 45535), (590, 36428), (826, 26020), (1180, 18214), (1301, 16520), (1652, 13010), (2065, 10408), (2360, 9107), (2602, 8260), (3304, 6505), (4130, 5204)]