138001520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{28279}}^1$

素因数の和:28353

約数の個数: 40

約数和(自身を含む): 326124960

約数和(自身を除く): 188123440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 28279, 56558, 113116, 141395, 226232, 282790, 452464, 565580, 1131160, 1725019, 2262320, 3450038, 6900076, 8625095, 13800152, 17250190, 27600304, 34500380, 69000760, 138001520]

約数ペア:

[(1, 138001520), (2, 69000760), (4, 34500380), (5, 27600304), (8, 17250190), (10, 13800152), (16, 8625095), (20, 6900076), (40, 3450038), (61, 2262320), (80, 1725019), (122, 1131160), (244, 565580), (305, 452464), (488, 282790), (610, 226232), (976, 141395), (1220, 113116), (2440, 56558), (4880, 28279)]