20723164420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{659}}^1\times {\mathrm{224617}}^1$

素因数の和:225292

約数の個数: 48

約数和(自身を含む): 49811287680

約数和(自身を除く): 29088123260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 659, 1318, 2636, 3295, 4613, 6590, 9226, 13180, 18452, 23065, 46130, 92260, 224617, 449234, 898468, 1123085, 1572319, 2246170, 3144638, 4492340, 6289276, 7861595, 15723190, 31446380, 148022603, 296045206, 592090412, 740113015, 1036158221, 1480226030, 2072316442, 2960452060, 4144632884, 5180791105, 10361582210, 20723164420]

約数ペア:

[(1, 20723164420), (2, 10361582210), (4, 5180791105), (5, 4144632884), (7, 2960452060), (10, 2072316442), (14, 1480226030), (20, 1036158221), (28, 740113015), (35, 592090412), (70, 296045206), (140, 148022603), (659, 31446380), (1318, 15723190), (2636, 7861595), (3295, 6289276), (4613, 4492340), (6590, 3144638), (9226, 2246170), (13180, 1572319), (18452, 1123085), (23065, 898468), (46130, 449234), (92260, 224617)]