12557720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 33858000

約数和(自身を除く): 21300280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 49, 56, 70, 86, 98, 140, 149, 172, 196, 215, 245, 280, 298, 301, 344, 392, 430, 490, 596, 602, 745, 860, 980, 1043, 1192, 1204, 1490, 1505, 1720, 1960, 2086, 2107, 2408, 2980, 3010, 4172, 4214, 5215, 5960, 6020, 6407, 7301, 8344, 8428, 10430, 10535, 12040, 12814, 14602, 16856, 20860, 21070, 25628, 29204, 32035, 36505, 41720, 42140, 44849, 51256, 58408, 64070, 73010, 84280, 89698, 128140, 146020, 179396, 224245, 256280, 292040, 313943, 358792, 448490, 627886, 896980, 1255772, 1569715, 1793960, 2511544, 3139430, 6278860, 12557720]

約数ペア:

[(1, 12557720), (2, 6278860), (4, 3139430), (5, 2511544), (7, 1793960), (8, 1569715), (10, 1255772), (14, 896980), (20, 627886), (28, 448490), (35, 358792), (40, 313943), (43, 292040), (49, 256280), (56, 224245), (70, 179396), (86, 146020), (98, 128140), (140, 89698), (149, 84280), (172, 73010), (196, 64070), (215, 58408), (245, 51256), (280, 44849), (298, 42140), (301, 41720), (344, 36505), (392, 32035), (430, 29204), (490, 25628), (596, 21070), (602, 20860), (745, 16856), (860, 14602), (980, 12814), (1043, 12040), (1192, 10535), (1204, 10430), (1490, 8428), (1505, 8344), (1720, 7301), (1960, 6407), (2086, 6020), (2107, 5960), (2408, 5215), (2980, 4214), (3010, 4172)]