21071210

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{479}}^1$

素因数の和:622

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 18119830

約数列:

[1, 2, 5, 10, 53, 83, 106, 166, 265, 415, 479, 530, 830, 958, 2395, 4399, 4790, 8798, 21995, 25387, 39757, 43990, 50774, 79514, 126935, 198785, 253870, 397570, 2107121, 4214242, 10535605, 21071210]

約数ペア:

[(1, 21071210), (2, 10535605), (5, 4214242), (10, 2107121), (53, 397570), (83, 253870), (106, 198785), (166, 126935), (265, 79514), (415, 50774), (479, 43990), (530, 39757), (830, 25387), (958, 21995), (2395, 8798), (4399, 4790)]