247486720

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:280

約数の個数: 144

約数和(自身を含む): 649010880

約数和(自身を除く): 401524160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 107, 128, 130, 139, 160, 208, 214, 256, 260, 278, 320, 416, 428, 520, 535, 556, 640, 695, 832, 856, 1040, 1070, 1112, 1280, 1390, 1391, 1664, 1712, 1807, 2080, 2140, 2224, 2780, 2782, 3328, 3424, 3614, 4160, 4280, 4448, 5560, 5564, 6848, 6955, 7228, 8320, 8560, 8896, 9035, 11120, 11128, 13696, 13910, 14456, 14873, 16640, 17120, 17792, 18070, 22240, 22256, 27392, 27820, 28912, 29746, 34240, 35584, 36140, 44480, 44512, 55640, 57824, 59492, 68480, 72280, 74365, 88960, 89024, 111280, 115648, 118984, 136960, 144560, 148730, 177920, 178048, 193349, 222560, 231296, 237968, 289120, 297460, 356096, 386698, 445120, 462592, 475936, 578240, 594920, 773396, 890240, 951872, 966745, 1156480, 1189840, 1546792, 1780480, 1903744, 1933490, 2312960, 2379680, 3093584, 3807488, 3866980, 4759360, 6187168, 7733960, 9518720, 12374336, 15467920, 19037440, 24748672, 30935840, 49497344, 61871680, 123743360, 247486720]

約数ペア:

[(1, 247486720), (2, 123743360), (4, 61871680), (5, 49497344), (8, 30935840), (10, 24748672), (13, 19037440), (16, 15467920), (20, 12374336), (26, 9518720), (32, 7733960), (40, 6187168), (52, 4759360), (64, 3866980), (65, 3807488), (80, 3093584), (104, 2379680), (107, 2312960), (128, 1933490), (130, 1903744), (139, 1780480), (160, 1546792), (208, 1189840), (214, 1156480), (256, 966745), (260, 951872), (278, 890240), (320, 773396), (416, 594920), (428, 578240), (520, 475936), (535, 462592), (556, 445120), (640, 386698), (695, 356096), (832, 297460), (856, 289120), (1040, 237968), (1070, 231296), (1112, 222560), (1280, 193349), (1390, 178048), (1391, 177920), (1664, 148730), (1712, 144560), (1807, 136960), (2080, 118984), (2140, 115648), (2224, 111280), (2780, 89024), (2782, 88960), (3328, 74365), (3424, 72280), (3614, 68480), (4160, 59492), (4280, 57824), (4448, 55640), (5560, 44512), (5564, 44480), (6848, 36140), (6955, 35584), (7228, 34240), (8320, 29746), (8560, 28912), (8896, 27820), (9035, 27392), (11120, 22256), (11128, 22240), (13696, 18070), (13910, 17792), (14456, 17120), (14873, 16640)]