19972856545

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{1597}}^1\times {\mathrm{80687}}^1$

素因数の和:82320

約数の個数: 16

約数和(自身を含む): 24756369408

約数和(自身を除く): 4783512863

約数列:

[1, 5, 31, 155, 1597, 7985, 49507, 80687, 247535, 403435, 2501297, 12506485, 128857139, 644285695, 3994571309, 19972856545]

約数ペア:

[(1, 19972856545), (5, 3994571309), (31, 644285695), (155, 128857139), (1597, 12506485), (7985, 2501297), (49507, 403435), (80687, 247535)]