398928208

素因数分解:

$2^4\times 7^3\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:649

約数の個数: 80

約数和(自身を含む): 909068800

約数和(自身を除く): 510140592

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 157, 196, 314, 343, 392, 463, 628, 686, 784, 926, 1099, 1256, 1372, 1852, 2198, 2512, 2744, 3241, 3704, 4396, 5488, 6482, 7408, 7693, 8792, 12964, 15386, 17584, 22687, 25928, 30772, 45374, 51856, 53851, 61544, 72691, 90748, 107702, 123088, 145382, 158809, 181496, 215404, 290764, 317618, 362992, 430808, 508837, 581528, 635236, 861616, 1017674, 1163056, 1270472, 2035348, 2540944, 3561859, 4070696, 7123718, 8141392, 14247436, 24933013, 28494872, 49866026, 56989744, 99732052, 199464104, 398928208]

約数ペア:

[(1, 398928208), (2, 199464104), (4, 99732052), (7, 56989744), (8, 49866026), (14, 28494872), (16, 24933013), (28, 14247436), (49, 8141392), (56, 7123718), (98, 4070696), (112, 3561859), (157, 2540944), (196, 2035348), (314, 1270472), (343, 1163056), (392, 1017674), (463, 861616), (628, 635236), (686, 581528), (784, 508837), (926, 430808), (1099, 362992), (1256, 317618), (1372, 290764), (1852, 215404), (2198, 181496), (2512, 158809), (2744, 145382), (3241, 123088), (3704, 107702), (4396, 90748), (5488, 72691), (6482, 61544), (7408, 53851), (7693, 51856), (8792, 45374), (12964, 30772), (15386, 25928), (17584, 22687)]