21836776

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 47678400

約数和(自身を除く): 25841624

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 43, 52, 76, 86, 104, 152, 172, 247, 257, 344, 494, 514, 559, 817, 988, 1028, 1118, 1634, 1976, 2056, 2236, 3268, 3341, 4472, 4883, 6536, 6682, 9766, 10621, 11051, 13364, 19532, 21242, 22102, 26728, 39064, 42484, 44204, 63479, 84968, 88408, 126958, 143663, 209969, 253916, 287326, 419938, 507832, 574652, 839876, 1149304, 1679752, 2729597, 5459194, 10918388, 21836776]

約数ペア:

[(1, 21836776), (2, 10918388), (4, 5459194), (8, 2729597), (13, 1679752), (19, 1149304), (26, 839876), (38, 574652), (43, 507832), (52, 419938), (76, 287326), (86, 253916), (104, 209969), (152, 143663), (172, 126958), (247, 88408), (257, 84968), (344, 63479), (494, 44204), (514, 42484), (559, 39064), (817, 26728), (988, 22102), (1028, 21242), (1118, 19532), (1634, 13364), (1976, 11051), (2056, 10621), (2236, 9766), (3268, 6682), (3341, 6536), (4472, 4883)]