19973540

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6361}}^1$

素因数の和:6527

約数の個数: 24

約数和(自身を含む): 42218232

約数和(自身を除く): 22244692

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6361, 12722, 25444, 31805, 63610, 127220, 998677, 1997354, 3994708, 4993385, 9986770, 19973540]

約数ペア:

[(1, 19973540), (2, 9986770), (4, 4993385), (5, 3994708), (10, 1997354), (20, 998677), (157, 127220), (314, 63610), (628, 31805), (785, 25444), (1570, 12722), (3140, 6361)]