20161164880

素因数分解:

$2^4\times 5^1\times {\mathrm{1607}}^1\times {\mathrm{156823}}^1$

素因数の和:158443

約数の個数: 40

約数和(自身を含む): 46904176512

約数和(自身を除く): 26743011632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1607, 3214, 6428, 8035, 12856, 16070, 25712, 32140, 64280, 128560, 156823, 313646, 627292, 784115, 1254584, 1568230, 2509168, 3136460, 6272920, 12545840, 252014561, 504029122, 1008058244, 1260072805, 2016116488, 2520145610, 4032232976, 5040291220, 10080582440, 20161164880]

約数ペア:

[(1, 20161164880), (2, 10080582440), (4, 5040291220), (5, 4032232976), (8, 2520145610), (10, 2016116488), (16, 1260072805), (20, 1008058244), (40, 504029122), (80, 252014561), (1607, 12545840), (3214, 6272920), (6428, 3136460), (8035, 2509168), (12856, 1568230), (16070, 1254584), (25712, 784115), (32140, 627292), (64280, 313646), (128560, 156823)]