21459520

素因数分解:

$2^6\times 5^1\times {\mathrm{67061}}^1$

素因数の和:67078

約数の個数: 28

約数和(自身を含む): 51101244

約数和(自身を除く): 29641724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67061, 134122, 268244, 335305, 536488, 670610, 1072976, 1341220, 2145952, 2682440, 4291904, 5364880, 10729760, 21459520]

約数ペア:

[(1, 21459520), (2, 10729760), (4, 5364880), (5, 4291904), (8, 2682440), (10, 2145952), (16, 1341220), (20, 1072976), (32, 670610), (40, 536488), (64, 335305), (80, 268244), (160, 134122), (320, 67061)]