5000020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^2\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 36

約数和(自身を含む): 10822140

約数和(自身を除く): 5822120

約数列:

[1, 2, 4, 5, 10, 20, 53, 89, 106, 178, 212, 265, 356, 445, 530, 890, 1060, 1780, 2809, 4717, 5618, 9434, 11236, 14045, 18868, 23585, 28090, 47170, 56180, 94340, 250001, 500002, 1000004, 1250005, 2500010, 5000020]

約数ペア:

[(1, 5000020), (2, 2500010), (4, 1250005), (5, 1000004), (10, 500002), (20, 250001), (53, 94340), (89, 56180), (106, 47170), (178, 28090), (212, 23585), (265, 18868), (356, 14045), (445, 11236), (530, 9434), (890, 5618), (1060, 4717), (1780, 2809)]