20906704

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 50746752

約数和(自身を除く): 29840048

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 83, 91, 104, 112, 166, 173, 182, 208, 332, 346, 364, 581, 664, 692, 728, 1079, 1162, 1211, 1328, 1384, 1456, 2158, 2249, 2324, 2422, 2768, 4316, 4498, 4648, 4844, 7553, 8632, 8996, 9296, 9688, 14359, 15106, 15743, 17264, 17992, 19376, 28718, 30212, 31486, 35984, 57436, 60424, 62972, 100513, 114872, 120848, 125944, 186667, 201026, 229744, 251888, 373334, 402052, 746668, 804104, 1306669, 1493336, 1608208, 2613338, 2986672, 5226676, 10453352, 20906704]

約数ペア:

[(1, 20906704), (2, 10453352), (4, 5226676), (7, 2986672), (8, 2613338), (13, 1608208), (14, 1493336), (16, 1306669), (26, 804104), (28, 746668), (52, 402052), (56, 373334), (83, 251888), (91, 229744), (104, 201026), (112, 186667), (166, 125944), (173, 120848), (182, 114872), (208, 100513), (332, 62972), (346, 60424), (364, 57436), (581, 35984), (664, 31486), (692, 30212), (728, 28718), (1079, 19376), (1162, 17992), (1211, 17264), (1328, 15743), (1384, 15106), (1456, 14359), (2158, 9688), (2249, 9296), (2324, 8996), (2422, 8632), (2768, 7553), (4316, 4844), (4498, 4648)]