221661904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{547}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 478382080

約数和(自身を除く): 256720176

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 43, 62, 76, 86, 124, 152, 172, 248, 304, 344, 496, 547, 589, 688, 817, 1094, 1178, 1333, 1634, 2188, 2356, 2666, 3268, 4376, 4712, 5332, 6536, 8752, 9424, 10393, 10664, 13072, 16957, 20786, 21328, 23521, 25327, 33914, 41572, 47042, 50654, 67828, 83144, 94084, 101308, 135656, 166288, 188168, 202616, 271312, 322183, 376336, 405232, 446899, 644366, 729151, 893798, 1288732, 1458302, 1787596, 2577464, 2916604, 3575192, 5154928, 5833208, 7150384, 11666416, 13853869, 27707738, 55415476, 110830952, 221661904]

約数ペア:

[(1, 221661904), (2, 110830952), (4, 55415476), (8, 27707738), (16, 13853869), (19, 11666416), (31, 7150384), (38, 5833208), (43, 5154928), (62, 3575192), (76, 2916604), (86, 2577464), (124, 1787596), (152, 1458302), (172, 1288732), (248, 893798), (304, 729151), (344, 644366), (496, 446899), (547, 405232), (589, 376336), (688, 322183), (817, 271312), (1094, 202616), (1178, 188168), (1333, 166288), (1634, 135656), (2188, 101308), (2356, 94084), (2666, 83144), (3268, 67828), (4376, 50654), (4712, 47042), (5332, 41572), (6536, 33914), (8752, 25327), (9424, 23521), (10393, 21328), (10664, 20786), (13072, 16957)]