20215048

素因数分解:

$2^3\times 7^3\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 25144952

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 53, 56, 98, 106, 139, 196, 212, 278, 343, 371, 392, 424, 556, 686, 742, 973, 1112, 1372, 1484, 1946, 2597, 2744, 2968, 3892, 5194, 6811, 7367, 7784, 10388, 13622, 14734, 18179, 20776, 27244, 29468, 36358, 47677, 51569, 54488, 58936, 72716, 95354, 103138, 145432, 190708, 206276, 360983, 381416, 412552, 721966, 1443932, 2526881, 2887864, 5053762, 10107524, 20215048]

約数ペア:

[(1, 20215048), (2, 10107524), (4, 5053762), (7, 2887864), (8, 2526881), (14, 1443932), (28, 721966), (49, 412552), (53, 381416), (56, 360983), (98, 206276), (106, 190708), (139, 145432), (196, 103138), (212, 95354), (278, 72716), (343, 58936), (371, 54488), (392, 51569), (424, 47677), (556, 36358), (686, 29468), (742, 27244), (973, 20776), (1112, 18179), (1372, 14734), (1484, 13622), (1946, 10388), (2597, 7784), (2744, 7367), (2968, 6811), (3892, 5194)]