21471940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153371}}^1$

素因数の和:153387

約数の個数: 24

約数和(自身を含む): 51532992

約数和(自身を除く): 30061052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153371, 306742, 613484, 766855, 1073597, 1533710, 2147194, 3067420, 4294388, 5367985, 10735970, 21471940]

約数ペア:

[(1, 21471940), (2, 10735970), (4, 5367985), (5, 4294388), (7, 3067420), (10, 2147194), (14, 1533710), (20, 1073597), (28, 766855), (35, 613484), (70, 306742), (140, 153371)]