156920350

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:477

約数の個数: 48

約数和(自身を含む): 298306800

約数和(自身を除く): 141386450

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 179, 197, 358, 394, 445, 890, 895, 985, 1790, 1970, 2225, 4450, 4475, 4925, 8950, 9850, 15931, 17533, 31862, 35066, 35263, 70526, 79655, 87665, 159310, 175330, 176315, 352630, 398275, 438325, 796550, 876650, 881575, 1763150, 3138407, 6276814, 15692035, 31384070, 78460175, 156920350]

約数ペア:

[(1, 156920350), (2, 78460175), (5, 31384070), (10, 15692035), (25, 6276814), (50, 3138407), (89, 1763150), (178, 881575), (179, 876650), (197, 796550), (358, 438325), (394, 398275), (445, 352630), (890, 176315), (895, 175330), (985, 159310), (1790, 87665), (1970, 79655), (2225, 70526), (4450, 35263), (4475, 35066), (4925, 31862), (8950, 17533), (9850, 15931)]