28619725

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 36882560

約数和(自身を除く): 8262835

約数列:

[1, 5, 25, 43, 79, 215, 337, 395, 1075, 1685, 1975, 3397, 8425, 14491, 16985, 26623, 72455, 84925, 133115, 362275, 665575, 1144789, 5723945, 28619725]

約数ペア:

[(1, 28619725), (5, 5723945), (25, 1144789), (43, 665575), (79, 362275), (215, 133115), (337, 84925), (395, 72455), (1075, 26623), (1685, 16985), (1975, 14491), (3397, 8425)]