21049512

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1123}}^1$

素因数の和:1214

約数の個数: 64

約数和(自身を含む): 58268160

約数和(自身を除く): 37218648

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 71, 88, 132, 142, 213, 264, 284, 426, 568, 781, 852, 1123, 1562, 1704, 2246, 2343, 3124, 3369, 4492, 4686, 6248, 6738, 8984, 9372, 12353, 13476, 18744, 24706, 26952, 37059, 49412, 74118, 79733, 98824, 148236, 159466, 239199, 296472, 318932, 478398, 637864, 877063, 956796, 1754126, 1913592, 2631189, 3508252, 5262378, 7016504, 10524756, 21049512]

約数ペア:

[(1, 21049512), (2, 10524756), (3, 7016504), (4, 5262378), (6, 3508252), (8, 2631189), (11, 1913592), (12, 1754126), (22, 956796), (24, 877063), (33, 637864), (44, 478398), (66, 318932), (71, 296472), (88, 239199), (132, 159466), (142, 148236), (213, 98824), (264, 79733), (284, 74118), (426, 49412), (568, 37059), (781, 26952), (852, 24706), (1123, 18744), (1562, 13476), (1704, 12353), (2246, 9372), (2343, 8984), (3124, 6738), (3369, 6248), (4492, 4686)]