127948720

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:398

約数の個数: 80

約数和(自身を含む): 306105408

約数和(自身を除く): 178156688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 157, 167, 244, 305, 314, 334, 488, 610, 628, 668, 785, 835, 976, 1220, 1256, 1336, 1570, 1670, 2440, 2512, 2672, 3140, 3340, 4880, 6280, 6680, 9577, 10187, 12560, 13360, 19154, 20374, 26219, 38308, 40748, 47885, 50935, 52438, 76616, 81496, 95770, 101870, 104876, 131095, 153232, 162992, 191540, 203740, 209752, 262190, 383080, 407480, 419504, 524380, 766160, 814960, 1048760, 1599359, 2097520, 3198718, 6397436, 7996795, 12794872, 15993590, 25589744, 31987180, 63974360, 127948720]

約数ペア:

[(1, 127948720), (2, 63974360), (4, 31987180), (5, 25589744), (8, 15993590), (10, 12794872), (16, 7996795), (20, 6397436), (40, 3198718), (61, 2097520), (80, 1599359), (122, 1048760), (157, 814960), (167, 766160), (244, 524380), (305, 419504), (314, 407480), (334, 383080), (488, 262190), (610, 209752), (628, 203740), (668, 191540), (785, 162992), (835, 153232), (976, 131095), (1220, 104876), (1256, 101870), (1336, 95770), (1570, 81496), (1670, 76616), (2440, 52438), (2512, 50935), (2672, 47885), (3140, 40748), (3340, 38308), (4880, 26219), (6280, 20374), (6680, 19154), (9577, 13360), (10187, 12560)]