21140224

素因数分解:

$2^8\times 7^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 49448448

約数和(自身を除く): 28308224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 128, 188, 224, 251, 256, 329, 376, 448, 502, 658, 752, 896, 1004, 1316, 1504, 1757, 1792, 2008, 2632, 3008, 3514, 4016, 5264, 6016, 7028, 8032, 10528, 11797, 12032, 14056, 16064, 21056, 23594, 28112, 32128, 42112, 47188, 56224, 64256, 82579, 84224, 94376, 112448, 165158, 188752, 224896, 330316, 377504, 449792, 660632, 755008, 1321264, 1510016, 2642528, 3020032, 5285056, 10570112, 21140224]

約数ペア:

[(1, 21140224), (2, 10570112), (4, 5285056), (7, 3020032), (8, 2642528), (14, 1510016), (16, 1321264), (28, 755008), (32, 660632), (47, 449792), (56, 377504), (64, 330316), (94, 224896), (112, 188752), (128, 165158), (188, 112448), (224, 94376), (251, 84224), (256, 82579), (329, 64256), (376, 56224), (448, 47188), (502, 42112), (658, 32128), (752, 28112), (896, 23594), (1004, 21056), (1316, 16064), (1504, 14056), (1757, 12032), (1792, 11797), (2008, 10528), (2632, 8032), (3008, 7028), (3514, 6016), (4016, 5264)]