21027200

素因数分解:

$2^7\times 5^2\times {\mathrm{6571}}^1$

素因数の和:6595

約数の個数: 48

約数和(自身を含む): 51951660

約数和(自身を除く): 30924460

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, 6571, 13142, 26284, 32855, 52568, 65710, 105136, 131420, 164275, 210272, 262840, 328550, 420544, 525680, 657100, 841088, 1051360, 1314200, 2102720, 2628400, 4205440, 5256800, 10513600, 21027200]

約数ペア:

[(1, 21027200), (2, 10513600), (4, 5256800), (5, 4205440), (8, 2628400), (10, 2102720), (16, 1314200), (20, 1051360), (25, 841088), (32, 657100), (40, 525680), (50, 420544), (64, 328550), (80, 262840), (100, 210272), (128, 164275), (160, 131420), (200, 105136), (320, 65710), (400, 52568), (640, 32855), (800, 26284), (1600, 13142), (3200, 6571)]