640302992

素因数分解:

$2^4\times 7^2\times {\mathrm{71}}^1\times {\mathrm{11503}}^1$

素因数の和:11596

約数の個数: 60

約数和(自身を含む): 1463584896

約数和(自身を除く): 823281904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 71, 98, 112, 142, 196, 284, 392, 497, 568, 784, 994, 1136, 1988, 3479, 3976, 6958, 7952, 11503, 13916, 23006, 27832, 46012, 55664, 80521, 92024, 161042, 184048, 322084, 563647, 644168, 816713, 1127294, 1288336, 1633426, 2254588, 3266852, 4509176, 5716991, 6533704, 9018352, 11433982, 13067408, 22867964, 40018937, 45735928, 80037874, 91471856, 160075748, 320151496, 640302992]

約数ペア:

[(1, 640302992), (2, 320151496), (4, 160075748), (7, 91471856), (8, 80037874), (14, 45735928), (16, 40018937), (28, 22867964), (49, 13067408), (56, 11433982), (71, 9018352), (98, 6533704), (112, 5716991), (142, 4509176), (196, 3266852), (284, 2254588), (392, 1633426), (497, 1288336), (568, 1127294), (784, 816713), (994, 644168), (1136, 563647), (1988, 322084), (3479, 184048), (3976, 161042), (6958, 92024), (7952, 80521), (11503, 55664), (13916, 46012), (23006, 27832)]