21478880

素因数分解:

$2^5\times 5^1\times {\mathrm{134243}}^1$

素因数の和:134258

約数の個数: 24

約数和(自身を含む): 50744232

約数和(自身を除く): 29265352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134243, 268486, 536972, 671215, 1073944, 1342430, 2147888, 2684860, 4295776, 5369720, 10739440, 21478880]

約数ペア:

[(1, 21478880), (2, 10739440), (4, 5369720), (5, 4295776), (8, 2684860), (10, 2147888), (16, 1342430), (20, 1073944), (32, 671215), (40, 536972), (80, 268486), (160, 134243)]