28871600

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{811}}^1$

素因数の和:918

約数の個数: 60

約数和(自身を含む): 70229880

約数和(自身を除く): 41358280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 178, 200, 356, 400, 445, 712, 811, 890, 1424, 1622, 1780, 2225, 3244, 3560, 4055, 4450, 6488, 7120, 8110, 8900, 12976, 16220, 17800, 20275, 32440, 35600, 40550, 64880, 72179, 81100, 144358, 162200, 288716, 324400, 360895, 577432, 721790, 1154864, 1443580, 1804475, 2887160, 3608950, 5774320, 7217900, 14435800, 28871600]

約数ペア:

[(1, 28871600), (2, 14435800), (4, 7217900), (5, 5774320), (8, 3608950), (10, 2887160), (16, 1804475), (20, 1443580), (25, 1154864), (40, 721790), (50, 577432), (80, 360895), (89, 324400), (100, 288716), (178, 162200), (200, 144358), (356, 81100), (400, 72179), (445, 64880), (712, 40550), (811, 35600), (890, 32440), (1424, 20275), (1622, 17800), (1780, 16220), (2225, 12976), (3244, 8900), (3560, 8110), (4055, 7120), (4450, 6488)]