664468

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1249}}^1$

素因数の和:1279

約数の個数: 24

約数和(自身を含む): 1400000

約数和(自身を除く): 735532

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 1249, 2498, 4996, 8743, 17486, 23731, 34972, 47462, 94924, 166117, 332234, 664468]

約数ペア:

[(1, 664468), (2, 332234), (4, 166117), (7, 94924), (14, 47462), (19, 34972), (28, 23731), (38, 17486), (76, 8743), (133, 4996), (266, 2498), (532, 1249)]