21987200

素因数分解:

$2^7\times 5^2\times {\mathrm{6871}}^1$

素因数の和:6895

約数の個数: 48

約数和(自身を含む): 54323160

約数和(自身を除く): 32335960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6871, 13742, 27484, 34355, 54968, 68710, 109936, 137420, 171775, 219872, 274840, 343550, 439744, 549680, 687100, 879488, 1099360, 1374200, 2198720, 2748400, 4397440, 5496800, 10993600, 21987200]

約数ペア:

[(1, 21987200), (2, 10993600), (4, 5496800), (5, 4397440), (8, 2748400), (10, 2198720), (16, 1374200), (20, 1099360), (25, 879488), (32, 687100), (40, 549680), (50, 439744), (64, 343550), (80, 274840), (100, 219872), (128, 171775), (160, 137420), (200, 109936), (320, 68710), (400, 54968), (640, 34355), (800, 27484), (1600, 13742), (3200, 6871)]