21919520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19571}}^1$

素因数の和:19593

約数の個数: 48

約数和(自身を含む): 59185728

約数和(自身を除く): 37266208

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, 19571, 39142, 78284, 97855, 136997, 156568, 195710, 273994, 313136, 391420, 547988, 626272, 684985, 782840, 1095976, 1369970, 1565680, 2191952, 2739940, 3131360, 4383904, 5479880, 10959760, 21919520]

約数ペア:

[(1, 21919520), (2, 10959760), (4, 5479880), (5, 4383904), (7, 3131360), (8, 2739940), (10, 2191952), (14, 1565680), (16, 1369970), (20, 1095976), (28, 782840), (32, 684985), (35, 626272), (40, 547988), (56, 391420), (70, 313136), (80, 273994), (112, 195710), (140, 156568), (160, 136997), (224, 97855), (280, 78284), (560, 39142), (1120, 19571)]