20643560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73727}}^1$

素因数の和:73745

約数の個数: 32

約数和(自身を含む): 53084160

約数和(自身を除く): 32440600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73727, 147454, 294908, 368635, 516089, 589816, 737270, 1032178, 1474540, 2064356, 2580445, 2949080, 4128712, 5160890, 10321780, 20643560]

約数ペア:

[(1, 20643560), (2, 10321780), (4, 5160890), (5, 4128712), (7, 2949080), (8, 2580445), (10, 2064356), (14, 1474540), (20, 1032178), (28, 737270), (35, 589816), (40, 516089), (56, 368635), (70, 294908), (140, 147454), (280, 73727)]