21822800

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{613}}^1$

素因数の和:720

約数の個数: 60

約数和(自身を含む): 53104860

約数和(自身を除く): 31282060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 178, 200, 356, 400, 445, 613, 712, 890, 1226, 1424, 1780, 2225, 2452, 3065, 3560, 4450, 4904, 6130, 7120, 8900, 9808, 12260, 15325, 17800, 24520, 30650, 35600, 49040, 54557, 61300, 109114, 122600, 218228, 245200, 272785, 436456, 545570, 872912, 1091140, 1363925, 2182280, 2727850, 4364560, 5455700, 10911400, 21822800]

約数ペア:

[(1, 21822800), (2, 10911400), (4, 5455700), (5, 4364560), (8, 2727850), (10, 2182280), (16, 1363925), (20, 1091140), (25, 872912), (40, 545570), (50, 436456), (80, 272785), (89, 245200), (100, 218228), (178, 122600), (200, 109114), (356, 61300), (400, 54557), (445, 49040), (613, 35600), (712, 30650), (890, 24520), (1226, 17800), (1424, 15325), (1780, 12260), (2225, 9808), (2452, 8900), (3065, 7120), (3560, 6130), (4450, 4904)]