21980560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{39251}}^1$

素因数の和:39271

約数の個数: 40

約数和(自身を含む): 58406976

約数和(自身を除く): 36426416

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 39251, 78502, 157004, 196255, 274757, 314008, 392510, 549514, 628016, 785020, 1099028, 1373785, 1570040, 2198056, 2747570, 3140080, 4396112, 5495140, 10990280, 21980560]

約数ペア:

[(1, 21980560), (2, 10990280), (4, 5495140), (5, 4396112), (7, 3140080), (8, 2747570), (10, 2198056), (14, 1570040), (16, 1373785), (20, 1099028), (28, 785020), (35, 628016), (40, 549514), (56, 392510), (70, 314008), (80, 274757), (112, 196255), (140, 157004), (280, 78502), (560, 39251)]