138644020

素因数分解:

$2^2\times 5^1\times {\mathrm{907}}^1\times {\mathrm{7643}}^1$

素因数の和:8559

約数の個数: 24

約数和(自身を含む): 291511584

約数和(自身を除く): 152867564

約数列:

[1, 2, 4, 5, 10, 20, 907, 1814, 3628, 4535, 7643, 9070, 15286, 18140, 30572, 38215, 76430, 152860, 6932201, 13864402, 27728804, 34661005, 69322010, 138644020]

約数ペア:

[(1, 138644020), (2, 69322010), (4, 34661005), (5, 27728804), (10, 13864402), (20, 6932201), (907, 152860), (1814, 76430), (3628, 38215), (4535, 30572), (7643, 18140), (9070, 15286)]