21979160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78497}}^1$

素因数の和:78515

約数の個数: 32

約数和(自身を含む): 56518560

約数和(自身を除く): 34539400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78497, 156994, 313988, 392485, 549479, 627976, 784970, 1098958, 1569940, 2197916, 2747395, 3139880, 4395832, 5494790, 10989580, 21979160]

約数ペア:

[(1, 21979160), (2, 10989580), (4, 5494790), (5, 4395832), (7, 3139880), (8, 2747395), (10, 2197916), (14, 1569940), (20, 1098958), (28, 784970), (35, 627976), (40, 549479), (56, 392485), (70, 313988), (140, 156994), (280, 78497)]