21242870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{1709}}^1$

素因数の和:1840

約数の個数: 32

約数和(自身を含む): 42107040

約数和(自身を除く): 20864170

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 113, 226, 565, 1130, 1243, 1709, 2486, 3418, 6215, 8545, 12430, 17090, 18799, 37598, 93995, 187990, 193117, 386234, 965585, 1931170, 2124287, 4248574, 10621435, 21242870]

約数ペア:

[(1, 21242870), (2, 10621435), (5, 4248574), (10, 2124287), (11, 1931170), (22, 965585), (55, 386234), (110, 193117), (113, 187990), (226, 93995), (565, 37598), (1130, 18799), (1243, 17090), (1709, 12430), (2486, 8545), (3418, 6215)]