25122283280

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{475081}}^1$

素因数の和:475755

約数の個数: 40

約数和(自身を含む): 58497796824

約数和(自身を除く): 33375513544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 1322, 2644, 3305, 5288, 6610, 10576, 13220, 26440, 52880, 475081, 950162, 1900324, 2375405, 3800648, 4750810, 7601296, 9501620, 19003240, 38006480, 314028541, 628057082, 1256114164, 1570142705, 2512228328, 3140285410, 5024456656, 6280570820, 12561141640, 25122283280]

約数ペア:

[(1, 25122283280), (2, 12561141640), (4, 6280570820), (5, 5024456656), (8, 3140285410), (10, 2512228328), (16, 1570142705), (20, 1256114164), (40, 628057082), (80, 314028541), (661, 38006480), (1322, 19003240), (2644, 9501620), (3305, 7601296), (5288, 4750810), (6610, 3800648), (10576, 2375405), (13220, 1900324), (26440, 950162), (52880, 475081)]