131851280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:345

約数の個数: 120

約数和(自身を含む): 344649816

約数和(自身を除く): 212798536

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 53, 55, 80, 88, 106, 110, 121, 176, 212, 220, 242, 257, 265, 424, 440, 484, 514, 530, 583, 605, 848, 880, 968, 1028, 1060, 1166, 1210, 1285, 1936, 2056, 2120, 2332, 2420, 2570, 2827, 2915, 4112, 4240, 4664, 4840, 5140, 5654, 5830, 6413, 9328, 9680, 10280, 11308, 11660, 12826, 13621, 14135, 20560, 22616, 23320, 25652, 27242, 28270, 31097, 32065, 45232, 46640, 51304, 54484, 56540, 62194, 64130, 68105, 102608, 108968, 113080, 124388, 128260, 136210, 149831, 155485, 217936, 226160, 248776, 256520, 272420, 299662, 310970, 497552, 513040, 544840, 599324, 621940, 749155, 1089680, 1198648, 1243880, 1498310, 1648141, 2397296, 2487760, 2996620, 3296282, 5993240, 6592564, 8240705, 11986480, 13185128, 16481410, 26370256, 32962820, 65925640, 131851280]

約数ペア:

[(1, 131851280), (2, 65925640), (4, 32962820), (5, 26370256), (8, 16481410), (10, 13185128), (11, 11986480), (16, 8240705), (20, 6592564), (22, 5993240), (40, 3296282), (44, 2996620), (53, 2487760), (55, 2397296), (80, 1648141), (88, 1498310), (106, 1243880), (110, 1198648), (121, 1089680), (176, 749155), (212, 621940), (220, 599324), (242, 544840), (257, 513040), (265, 497552), (424, 310970), (440, 299662), (484, 272420), (514, 256520), (530, 248776), (583, 226160), (605, 217936), (848, 155485), (880, 149831), (968, 136210), (1028, 128260), (1060, 124388), (1166, 113080), (1210, 108968), (1285, 102608), (1936, 68105), (2056, 64130), (2120, 62194), (2332, 56540), (2420, 54484), (2570, 51304), (2827, 46640), (2915, 45232), (4112, 32065), (4240, 31097), (4664, 28270), (4840, 27242), (5140, 25652), (5654, 23320), (5830, 22616), (6413, 20560), (9328, 14135), (9680, 13621), (10280, 12826), (11308, 11660)]