21366880

素因数分解:

$2^5\times 5^1\times {\mathrm{133543}}^1$

素因数の和:133558

約数の個数: 24

約数和(自身を含む): 50479632

約数和(自身を除く): 29112752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133543, 267086, 534172, 667715, 1068344, 1335430, 2136688, 2670860, 4273376, 5341720, 10683440, 21366880]

約数ペア:

[(1, 21366880), (2, 10683440), (4, 5341720), (5, 4273376), (8, 2670860), (10, 2136688), (16, 1335430), (20, 1068344), (32, 667715), (40, 534172), (80, 267086), (160, 133543)]