21000422720

素因数分解:

$2^6\times 5^1\times {\mathrm{65626321}}^1$

素因数の和:65626338

約数の個数: 28

約数和(自身を含む): 50007257364

約数和(自身を除く): 29006834644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65626321, 131252642, 262505284, 328131605, 525010568, 656263210, 1050021136, 1312526420, 2100042272, 2625052840, 4200084544, 5250105680, 10500211360, 21000422720]

約数ペア:

[(1, 21000422720), (2, 10500211360), (4, 5250105680), (5, 4200084544), (8, 2625052840), (10, 2100042272), (16, 1312526420), (20, 1050021136), (32, 656263210), (40, 525010568), (64, 328131605), (80, 262505284), (160, 131252642), (320, 65626321)]