439880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1571}}^1$

素因数の和:1589

約数の個数: 32

約数和(自身を含む): 1131840

約数和(自身を除く): 691960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1571, 3142, 6284, 7855, 10997, 12568, 15710, 21994, 31420, 43988, 54985, 62840, 87976, 109970, 219940, 439880]

約数ペア:

[(1, 439880), (2, 219940), (4, 109970), (5, 87976), (7, 62840), (8, 54985), (10, 43988), (14, 31420), (20, 21994), (28, 15710), (35, 12568), (40, 10997), (56, 7855), (70, 6284), (140, 3142), (280, 1571)]