215465905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{353}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 282610944

約数和(自身を除く): 67145039

約数列:

[1, 5, 17, 43, 85, 167, 215, 353, 731, 835, 1765, 2839, 3655, 6001, 7181, 14195, 15179, 30005, 35905, 58951, 75895, 122077, 258043, 294755, 610385, 1002167, 1290215, 2534893, 5010835, 12674465, 43093181, 215465905]

約数ペア:

[(1, 215465905), (5, 43093181), (17, 12674465), (43, 5010835), (85, 2534893), (167, 1290215), (215, 1002167), (353, 610385), (731, 294755), (835, 258043), (1765, 122077), (2839, 75895), (3655, 58951), (6001, 35905), (7181, 30005), (14195, 15179)]