128355800

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{7211}}^1$

素因数の和:7316

約数の個数: 48

約数和(自身を含む): 301822200

約数和(自身を除く): 173466400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1780, 2225, 3560, 4450, 7211, 8900, 14422, 17800, 28844, 36055, 57688, 72110, 144220, 180275, 288440, 360550, 641779, 721100, 1283558, 1442200, 2567116, 3208895, 5134232, 6417790, 12835580, 16044475, 25671160, 32088950, 64177900, 128355800]

約数ペア:

[(1, 128355800), (2, 64177900), (4, 32088950), (5, 25671160), (8, 16044475), (10, 12835580), (20, 6417790), (25, 5134232), (40, 3208895), (50, 2567116), (89, 1442200), (100, 1283558), (178, 721100), (200, 641779), (356, 360550), (445, 288440), (712, 180275), (890, 144220), (1780, 72110), (2225, 57688), (3560, 36055), (4450, 28844), (7211, 17800), (8900, 14422)]