21437920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19141}}^1$

素因数の和:19163

約数の個数: 48

約数和(自身を含む): 57885408

約数和(自身を除く): 36447488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19141, 38282, 76564, 95705, 133987, 153128, 191410, 267974, 306256, 382820, 535948, 612512, 669935, 765640, 1071896, 1339870, 1531280, 2143792, 2679740, 3062560, 4287584, 5359480, 10718960, 21437920]

約数ペア:

[(1, 21437920), (2, 10718960), (4, 5359480), (5, 4287584), (7, 3062560), (8, 2679740), (10, 2143792), (14, 1531280), (16, 1339870), (20, 1071896), (28, 765640), (32, 669935), (35, 612512), (40, 535948), (56, 382820), (70, 306256), (80, 267974), (112, 191410), (140, 153128), (160, 133987), (224, 95705), (280, 76564), (560, 38282), (1120, 19141)]