20857364

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 42705600

約数和(自身を除く): 21848236

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 61, 76, 122, 209, 244, 409, 418, 671, 818, 836, 1159, 1342, 1636, 2318, 2684, 4499, 4636, 7771, 8998, 12749, 15542, 17996, 24949, 25498, 31084, 49898, 50996, 85481, 99796, 170962, 274439, 341924, 474031, 548878, 948062, 1097756, 1896124, 5214341, 10428682, 20857364]

約数ペア:

[(1, 20857364), (2, 10428682), (4, 5214341), (11, 1896124), (19, 1097756), (22, 948062), (38, 548878), (44, 474031), (61, 341924), (76, 274439), (122, 170962), (209, 99796), (244, 85481), (409, 50996), (418, 49898), (671, 31084), (818, 25498), (836, 24949), (1159, 17996), (1342, 15542), (1636, 12749), (2318, 8998), (2684, 7771), (4499, 4636)]