21591640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1307}}^1$

素因数の和:1384

約数の個数: 64

約数和(自身を含む): 56505600

約数和(自身を除く): 34913960

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, 1307, 1652, 2065, 2360, 2614, 3304, 4130, 5228, 6535, 8260, 9149, 10456, 13070, 16520, 18298, 26140, 36596, 45745, 52280, 73192, 77113, 91490, 154226, 182980, 308452, 365960, 385565, 539791, 616904, 771130, 1079582, 1542260, 2159164, 2698955, 3084520, 4318328, 5397910, 10795820, 21591640]

約数ペア:

[(1, 21591640), (2, 10795820), (4, 5397910), (5, 4318328), (7, 3084520), (8, 2698955), (10, 2159164), (14, 1542260), (20, 1079582), (28, 771130), (35, 616904), (40, 539791), (56, 385565), (59, 365960), (70, 308452), (118, 182980), (140, 154226), (236, 91490), (280, 77113), (295, 73192), (413, 52280), (472, 45745), (590, 36596), (826, 26140), (1180, 18298), (1307, 16520), (1652, 13070), (2065, 10456), (2360, 9149), (2614, 8260), (3304, 6535), (4130, 5228)]