21027136

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:351

約数の個数: 56

約数和(自身を含む): 45516800

約数和(自身を除く): 24489664

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 127, 199, 208, 254, 398, 416, 508, 796, 832, 1016, 1592, 1651, 2032, 2587, 3184, 3302, 4064, 5174, 6368, 6604, 8128, 10348, 12736, 13208, 20696, 25273, 26416, 41392, 50546, 52832, 82784, 101092, 105664, 165568, 202184, 328549, 404368, 657098, 808736, 1314196, 1617472, 2628392, 5256784, 10513568, 21027136]

約数ペア:

[(1, 21027136), (2, 10513568), (4, 5256784), (8, 2628392), (13, 1617472), (16, 1314196), (26, 808736), (32, 657098), (52, 404368), (64, 328549), (104, 202184), (127, 165568), (199, 105664), (208, 101092), (254, 82784), (398, 52832), (416, 50546), (508, 41392), (796, 26416), (832, 25273), (1016, 20696), (1592, 13208), (1651, 12736), (2032, 10348), (2587, 8128), (3184, 6604), (3302, 6368), (4064, 5174)]