161928500

素因数分解:

$2^2\times 5^3\times {\mathrm{31}}^2\times {\mathrm{337}}^1$

素因数の和:418

約数の個数: 72

約数和(自身を含む): 366512328

約数和(自身を除く): 204583828

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 337, 500, 620, 674, 775, 961, 1348, 1550, 1685, 1922, 3100, 3370, 3844, 3875, 4805, 6740, 7750, 8425, 9610, 10447, 15500, 16850, 19220, 20894, 24025, 33700, 41788, 42125, 48050, 52235, 84250, 96100, 104470, 120125, 168500, 208940, 240250, 261175, 323857, 480500, 522350, 647714, 1044700, 1295428, 1305875, 1619285, 2611750, 3238570, 5223500, 6477140, 8096425, 16192850, 32385700, 40482125, 80964250, 161928500]

約数ペア:

[(1, 161928500), (2, 80964250), (4, 40482125), (5, 32385700), (10, 16192850), (20, 8096425), (25, 6477140), (31, 5223500), (50, 3238570), (62, 2611750), (100, 1619285), (124, 1305875), (125, 1295428), (155, 1044700), (250, 647714), (310, 522350), (337, 480500), (500, 323857), (620, 261175), (674, 240250), (775, 208940), (961, 168500), (1348, 120125), (1550, 104470), (1685, 96100), (1922, 84250), (3100, 52235), (3370, 48050), (3844, 42125), (3875, 41788), (4805, 33700), (6740, 24025), (7750, 20894), (8425, 19220), (9610, 16850), (10447, 15500)]