19829200

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{557}}^1$

素因数の和:664

約数の個数: 60

約数和(自身を含む): 48261420

約数和(自身を除く): 28432220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 178, 200, 356, 400, 445, 557, 712, 890, 1114, 1424, 1780, 2225, 2228, 2785, 3560, 4450, 4456, 5570, 7120, 8900, 8912, 11140, 13925, 17800, 22280, 27850, 35600, 44560, 49573, 55700, 99146, 111400, 198292, 222800, 247865, 396584, 495730, 793168, 991460, 1239325, 1982920, 2478650, 3965840, 4957300, 9914600, 19829200]

約数ペア:

[(1, 19829200), (2, 9914600), (4, 4957300), (5, 3965840), (8, 2478650), (10, 1982920), (16, 1239325), (20, 991460), (25, 793168), (40, 495730), (50, 396584), (80, 247865), (89, 222800), (100, 198292), (178, 111400), (200, 99146), (356, 55700), (400, 49573), (445, 44560), (557, 35600), (712, 27850), (890, 22280), (1114, 17800), (1424, 13925), (1780, 11140), (2225, 8912), (2228, 8900), (2785, 7120), (3560, 5570), (4450, 4456)]