20197616

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1029

約数の個数: 40

約数和(自身を含む): 41378304

約数和(自身を除く): 21180688

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 947, 1333, 1894, 2666, 3788, 5332, 7576, 10664, 15152, 21328, 29357, 40721, 58714, 81442, 117428, 162884, 234856, 325768, 469712, 651536, 1262351, 2524702, 5049404, 10098808, 20197616]

約数ペア:

[(1, 20197616), (2, 10098808), (4, 5049404), (8, 2524702), (16, 1262351), (31, 651536), (43, 469712), (62, 325768), (86, 234856), (124, 162884), (172, 117428), (248, 81442), (344, 58714), (496, 40721), (688, 29357), (947, 21328), (1333, 15152), (1894, 10664), (2666, 7576), (3788, 5332)]