215881456

素因数分解:

$2^4\times 7^3\times {\mathrm{139}}^1\times {\mathrm{283}}^1$

素因数の和:451

約数の個数: 80

約数和(自身を含む): 493024000

約数和(自身を除く): 277142544

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 139, 196, 278, 283, 343, 392, 556, 566, 686, 784, 973, 1112, 1132, 1372, 1946, 1981, 2224, 2264, 2744, 3892, 3962, 4528, 5488, 6811, 7784, 7924, 13622, 13867, 15568, 15848, 27244, 27734, 31696, 39337, 47677, 54488, 55468, 78674, 95354, 97069, 108976, 110936, 157348, 190708, 194138, 221872, 275359, 314696, 381416, 388276, 550718, 629392, 762832, 776552, 1101436, 1553104, 1927513, 2202872, 3855026, 4405744, 7710052, 13492591, 15420104, 26985182, 30840208, 53970364, 107940728, 215881456]

約数ペア:

[(1, 215881456), (2, 107940728), (4, 53970364), (7, 30840208), (8, 26985182), (14, 15420104), (16, 13492591), (28, 7710052), (49, 4405744), (56, 3855026), (98, 2202872), (112, 1927513), (139, 1553104), (196, 1101436), (278, 776552), (283, 762832), (343, 629392), (392, 550718), (556, 388276), (566, 381416), (686, 314696), (784, 275359), (973, 221872), (1112, 194138), (1132, 190708), (1372, 157348), (1946, 110936), (1981, 108976), (2224, 97069), (2264, 95354), (2744, 78674), (3892, 55468), (3962, 54488), (4528, 47677), (5488, 39337), (6811, 31696), (7784, 27734), (7924, 27244), (13622, 15848), (13867, 15568)]