28245040

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3967}}^1$

素因数の和:4069

約数の個数: 40

約数和(自身を含む): 66424320

約数和(自身を除く): 38179280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 3967, 7120, 7934, 15868, 19835, 31736, 39670, 63472, 79340, 158680, 317360, 353063, 706126, 1412252, 1765315, 2824504, 3530630, 5649008, 7061260, 14122520, 28245040]

約数ペア:

[(1, 28245040), (2, 14122520), (4, 7061260), (5, 5649008), (8, 3530630), (10, 2824504), (16, 1765315), (20, 1412252), (40, 706126), (80, 353063), (89, 317360), (178, 158680), (356, 79340), (445, 63472), (712, 39670), (890, 31736), (1424, 19835), (1780, 15868), (3560, 7934), (3967, 7120)]