20218178456

素因数分解:

$2^3\times 7^1\times {\mathrm{10321}}^1\times {\mathrm{34981}}^1$

素因数の和:45315

約数の個数: 32

約数和(自身を含む): 43330104480

約数和(自身を除く): 23111926024

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 10321, 20642, 34981, 41284, 69962, 72247, 82568, 139924, 144494, 244867, 279848, 288988, 489734, 577976, 979468, 1958936, 361038901, 722077802, 1444155604, 2527272307, 2888311208, 5054544614, 10109089228, 20218178456]

約数ペア:

[(1, 20218178456), (2, 10109089228), (4, 5054544614), (7, 2888311208), (8, 2527272307), (14, 1444155604), (28, 722077802), (56, 361038901), (10321, 1958936), (20642, 979468), (34981, 577976), (41284, 489734), (69962, 288988), (72247, 279848), (82568, 244867), (139924, 144494)]