12540100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1409}}^1$

素因数の和:1512

約数の個数: 36

約数和(自身を含む): 27537300

約数和(自身を除く): 14997200

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1409, 1780, 2225, 2818, 4450, 5636, 7045, 8900, 14090, 28180, 35225, 70450, 125401, 140900, 250802, 501604, 627005, 1254010, 2508020, 3135025, 6270050, 12540100]

約数ペア:

[(1, 12540100), (2, 6270050), (4, 3135025), (5, 2508020), (10, 1254010), (20, 627005), (25, 501604), (50, 250802), (89, 140900), (100, 125401), (178, 70450), (356, 35225), (445, 28180), (890, 14090), (1409, 8900), (1780, 7045), (2225, 5636), (2818, 4450)]