18781623

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6343}}^1$

素因数の和:6403

約数の個数: 24

約数和(自身を含む): 31669248

約数和(自身を除く): 12887625

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6343, 19029, 44401, 57087, 133203, 298121, 399609, 894363, 2086847, 2683089, 6260541, 18781623]

約数ペア:

[(1, 18781623), (3, 6260541), (7, 2683089), (9, 2086847), (21, 894363), (47, 399609), (63, 298121), (141, 133203), (329, 57087), (423, 44401), (987, 19029), (2961, 6343)]