21681100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{659}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 54996480

約数和(自身を除く): 33315380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 47, 50, 70, 94, 100, 140, 175, 188, 235, 329, 350, 470, 658, 659, 700, 940, 1175, 1316, 1318, 1645, 2350, 2636, 3290, 3295, 4613, 4700, 6580, 6590, 8225, 9226, 13180, 16450, 16475, 18452, 23065, 30973, 32900, 32950, 46130, 61946, 65900, 92260, 115325, 123892, 154865, 216811, 230650, 309730, 433622, 461300, 619460, 774325, 867244, 1084055, 1548650, 2168110, 3097300, 4336220, 5420275, 10840550, 21681100]

約数ペア:

[(1, 21681100), (2, 10840550), (4, 5420275), (5, 4336220), (7, 3097300), (10, 2168110), (14, 1548650), (20, 1084055), (25, 867244), (28, 774325), (35, 619460), (47, 461300), (50, 433622), (70, 309730), (94, 230650), (100, 216811), (140, 154865), (175, 123892), (188, 115325), (235, 92260), (329, 65900), (350, 61946), (470, 46130), (658, 32950), (659, 32900), (700, 30973), (940, 23065), (1175, 18452), (1316, 16475), (1318, 16450), (1645, 13180), (2350, 9226), (2636, 8225), (3290, 6590), (3295, 6580), (4613, 4700)]