21432040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76543}}^1$

素因数の和:76561

約数の個数: 32

約数和(自身を含む): 55111680

約数和(自身を除く): 33679640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76543, 153086, 306172, 382715, 535801, 612344, 765430, 1071602, 1530860, 2143204, 2679005, 3061720, 4286408, 5358010, 10716020, 21432040]

約数ペア:

[(1, 21432040), (2, 10716020), (4, 5358010), (5, 4286408), (7, 3061720), (8, 2679005), (10, 2143204), (14, 1530860), (20, 1071602), (28, 765430), (35, 612344), (40, 535801), (56, 382715), (70, 306172), (140, 153086), (280, 76543)]