21290402

素因数分解:

$2^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{2441}}^1$

素因数の和:2546

約数の個数: 24

約数和(自身を含む): 37582380

約数和(自身を除く): 16291978

約数列:

[1, 2, 7, 14, 49, 89, 98, 178, 623, 1246, 2441, 4361, 4882, 8722, 17087, 34174, 119609, 217249, 239218, 434498, 1520743, 3041486, 10645201, 21290402]

約数ペア:

[(1, 21290402), (2, 10645201), (7, 3041486), (14, 1520743), (49, 434498), (89, 239218), (98, 217249), (178, 119609), (623, 34174), (1246, 17087), (2441, 8722), (4361, 4882)]