19722625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1$

素因数の和:310

約数の個数: 32

約数和(自身を含む): 27125280

約数和(自身を除く): 7402655

約数列:

[1, 5, 13, 25, 53, 65, 125, 229, 265, 325, 689, 1145, 1325, 1625, 2977, 3445, 5725, 6625, 12137, 14885, 17225, 28625, 60685, 74425, 86125, 157781, 303425, 372125, 788905, 1517125, 3944525, 19722625]

約数ペア:

[(1, 19722625), (5, 3944525), (13, 1517125), (25, 788905), (53, 372125), (65, 303425), (125, 157781), (229, 86125), (265, 74425), (325, 60685), (689, 28625), (1145, 17225), (1325, 14885), (1625, 12137), (2977, 6625), (3445, 5725)]