199791880

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{7649}}^1$

素因数の和:8313

約数の個数: 32

約数和(自身を含む): 450279000

約数和(自身を除く): 250487120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 1306, 2612, 3265, 5224, 6530, 7649, 13060, 15298, 26120, 30596, 38245, 61192, 76490, 152980, 305960, 4994797, 9989594, 19979188, 24973985, 39958376, 49947970, 99895940, 199791880]

約数ペア:

[(1, 199791880), (2, 99895940), (4, 49947970), (5, 39958376), (8, 24973985), (10, 19979188), (20, 9989594), (40, 4994797), (653, 305960), (1306, 152980), (2612, 76490), (3265, 61192), (5224, 38245), (6530, 30596), (7649, 26120), (13060, 15298)]