19677488

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{773}}^1$

素因数の和:861

約数の個数: 40

約数和(自身を含む): 40117968

約数和(自身を除く): 20440480

約数列:

[1, 2, 4, 8, 16, 37, 43, 74, 86, 148, 172, 296, 344, 592, 688, 773, 1546, 1591, 3092, 3182, 6184, 6364, 12368, 12728, 25456, 28601, 33239, 57202, 66478, 114404, 132956, 228808, 265912, 457616, 531824, 1229843, 2459686, 4919372, 9838744, 19677488]

約数ペア:

[(1, 19677488), (2, 9838744), (4, 4919372), (8, 2459686), (16, 1229843), (37, 531824), (43, 457616), (74, 265912), (86, 228808), (148, 132956), (172, 114404), (296, 66478), (344, 57202), (592, 33239), (688, 28601), (773, 25456), (1546, 12728), (1591, 12368), (3092, 6364), (3182, 6184)]