21315200

素因数分解:

$2^7\times 5^2\times {\mathrm{6661}}^1$

素因数の和:6685

約数の個数: 48

約数和(自身を含む): 52663110

約数和(自身を除く): 31347910

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, 6661, 13322, 26644, 33305, 53288, 66610, 106576, 133220, 166525, 213152, 266440, 333050, 426304, 532880, 666100, 852608, 1065760, 1332200, 2131520, 2664400, 4263040, 5328800, 10657600, 21315200]

約数ペア:

[(1, 21315200), (2, 10657600), (4, 5328800), (5, 4263040), (8, 2664400), (10, 2131520), (16, 1332200), (20, 1065760), (25, 852608), (32, 666100), (40, 532880), (50, 426304), (64, 333050), (80, 266440), (100, 213152), (128, 166525), (160, 133220), (200, 106576), (320, 66610), (400, 53288), (640, 33305), (800, 26644), (1600, 13322), (3200, 6661)]