20980504

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{373}}^1$

素因数の和:547

約数の個数: 32

約数和(自身を含む): 40392000

約数和(自身を除く): 19411496

約数列:

[1, 2, 4, 8, 79, 89, 158, 178, 316, 356, 373, 632, 712, 746, 1492, 2984, 7031, 14062, 28124, 29467, 33197, 56248, 58934, 66394, 117868, 132788, 235736, 265576, 2622563, 5245126, 10490252, 20980504]

約数ペア:

[(1, 20980504), (2, 10490252), (4, 5245126), (8, 2622563), (79, 265576), (89, 235736), (158, 132788), (178, 117868), (316, 66394), (356, 58934), (373, 56248), (632, 33197), (712, 29467), (746, 28124), (1492, 14062), (2984, 7031)]