21986240

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1\times {\mathrm{541}}^1$

素因数の和:685

約数の個数: 56

約数和(自身を含む): 52864512

約数和(自身を除く): 30878272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 508, 541, 635, 1016, 1082, 1270, 2032, 2164, 2540, 2705, 4064, 4328, 5080, 5410, 8128, 8656, 10160, 10820, 17312, 20320, 21640, 34624, 40640, 43280, 68707, 86560, 137414, 173120, 274828, 343535, 549656, 687070, 1099312, 1374140, 2198624, 2748280, 4397248, 5496560, 10993120, 21986240]

約数ペア:

[(1, 21986240), (2, 10993120), (4, 5496560), (5, 4397248), (8, 2748280), (10, 2198624), (16, 1374140), (20, 1099312), (32, 687070), (40, 549656), (64, 343535), (80, 274828), (127, 173120), (160, 137414), (254, 86560), (320, 68707), (508, 43280), (541, 40640), (635, 34624), (1016, 21640), (1082, 20320), (1270, 17312), (2032, 10820), (2164, 10160), (2540, 8656), (2705, 8128), (4064, 5410), (4328, 5080)]