217005

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:85

約数の個数: 32

約数和(自身を含む): 393984

約数和(自身を除く): 176979

約数列:

[1, 3, 5, 15, 17, 23, 37, 51, 69, 85, 111, 115, 185, 255, 345, 391, 555, 629, 851, 1173, 1887, 1955, 2553, 3145, 4255, 5865, 9435, 12765, 14467, 43401, 72335, 217005]

約数ペア:

[(1, 217005), (3, 72335), (5, 43401), (15, 14467), (17, 12765), (23, 9435), (37, 5865), (51, 4255), (69, 3145), (85, 2553), (111, 1955), (115, 1887), (185, 1173), (255, 851), (345, 629), (391, 555)]