21442240

素因数分解:

$2^6\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1811}}^1$

素因数の和:1865

約数の個数: 56

約数和(自身を含む): 52468272

約数和(自身を除く): 31026032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 148, 160, 185, 296, 320, 370, 592, 740, 1184, 1480, 1811, 2368, 2960, 3622, 5920, 7244, 9055, 11840, 14488, 18110, 28976, 36220, 57952, 67007, 72440, 115904, 134014, 144880, 268028, 289760, 335035, 536056, 579520, 670070, 1072112, 1340140, 2144224, 2680280, 4288448, 5360560, 10721120, 21442240]

約数ペア:

[(1, 21442240), (2, 10721120), (4, 5360560), (5, 4288448), (8, 2680280), (10, 2144224), (16, 1340140), (20, 1072112), (32, 670070), (37, 579520), (40, 536056), (64, 335035), (74, 289760), (80, 268028), (148, 144880), (160, 134014), (185, 115904), (296, 72440), (320, 67007), (370, 57952), (592, 36220), (740, 28976), (1184, 18110), (1480, 14488), (1811, 11840), (2368, 9055), (2960, 7244), (3622, 5920)]