445880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 1023840

約数和(自身を除く): 577960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 157, 284, 314, 355, 568, 628, 710, 785, 1256, 1420, 1570, 2840, 3140, 6280, 11147, 22294, 44588, 55735, 89176, 111470, 222940, 445880]

約数ペア:

[(1, 445880), (2, 222940), (4, 111470), (5, 89176), (8, 55735), (10, 44588), (20, 22294), (40, 11147), (71, 6280), (142, 3140), (157, 2840), (284, 1570), (314, 1420), (355, 1256), (568, 785), (628, 710)]