16678120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 22720280

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 59, 74, 118, 148, 185, 191, 236, 295, 296, 370, 382, 472, 590, 740, 764, 955, 1180, 1480, 1528, 1910, 2183, 2360, 3820, 4366, 7067, 7640, 8732, 10915, 11269, 14134, 17464, 21830, 22538, 28268, 35335, 43660, 45076, 56345, 56536, 70670, 87320, 90152, 112690, 141340, 225380, 282680, 416953, 450760, 833906, 1667812, 2084765, 3335624, 4169530, 8339060, 16678120]

約数ペア:

[(1, 16678120), (2, 8339060), (4, 4169530), (5, 3335624), (8, 2084765), (10, 1667812), (20, 833906), (37, 450760), (40, 416953), (59, 282680), (74, 225380), (118, 141340), (148, 112690), (185, 90152), (191, 87320), (236, 70670), (295, 56536), (296, 56345), (370, 45076), (382, 43660), (472, 35335), (590, 28268), (740, 22538), (764, 21830), (955, 17464), (1180, 14134), (1480, 11269), (1528, 10915), (1910, 8732), (2183, 7640), (2360, 7067), (3820, 4366)]