20897264

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1297}}^1$

素因数の和:1377

約数の個数: 40

約数和(自身を含む): 43457040

約数和(自身を除く): 22559776

約数列:

[1, 2, 4, 8, 16, 19, 38, 53, 76, 106, 152, 212, 304, 424, 848, 1007, 1297, 2014, 2594, 4028, 5188, 8056, 10376, 16112, 20752, 24643, 49286, 68741, 98572, 137482, 197144, 274964, 394288, 549928, 1099856, 1306079, 2612158, 5224316, 10448632, 20897264]

約数ペア:

[(1, 20897264), (2, 10448632), (4, 5224316), (8, 2612158), (16, 1306079), (19, 1099856), (38, 549928), (53, 394288), (76, 274964), (106, 197144), (152, 137482), (212, 98572), (304, 68741), (424, 49286), (848, 24643), (1007, 20752), (1297, 16112), (2014, 10376), (2594, 8056), (4028, 5188)]