138879280

素因数分解:

$2^4\times 5^1\times {\mathrm{919}}^1\times {\mathrm{1889}}^1$

素因数の和:2821

約数の個数: 40

約数和(自身を含む): 323416800

約数和(自身を除く): 184537520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 919, 1838, 1889, 3676, 3778, 4595, 7352, 7556, 9190, 9445, 14704, 15112, 18380, 18890, 30224, 36760, 37780, 73520, 75560, 151120, 1735991, 3471982, 6943964, 8679955, 13887928, 17359910, 27775856, 34719820, 69439640, 138879280]

約数ペア:

[(1, 138879280), (2, 69439640), (4, 34719820), (5, 27775856), (8, 17359910), (10, 13887928), (16, 8679955), (20, 6943964), (40, 3471982), (80, 1735991), (919, 151120), (1838, 75560), (1889, 73520), (3676, 37780), (3778, 36760), (4595, 30224), (7352, 18890), (7556, 18380), (9190, 15112), (9445, 14704)]