28885840

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4057}}^1$

素因数の和:4159

約数の個数: 40

約数和(自身を含む): 67930920

約数和(自身を除く): 39045080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 4057, 7120, 8114, 16228, 20285, 32456, 40570, 64912, 81140, 162280, 324560, 361073, 722146, 1444292, 1805365, 2888584, 3610730, 5777168, 7221460, 14442920, 28885840]

約数ペア:

[(1, 28885840), (2, 14442920), (4, 7221460), (5, 5777168), (8, 3610730), (10, 2888584), (16, 1805365), (20, 1444292), (40, 722146), (80, 361073), (89, 324560), (178, 162280), (356, 81140), (445, 64912), (712, 40570), (890, 32456), (1424, 20285), (1780, 16228), (3560, 8114), (4057, 7120)]