17966875

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 40

約数和(自身を含む): 25304400

約数和(自身を除く): 7337525

約数列:

[1, 5, 17, 19, 25, 85, 89, 95, 125, 323, 425, 445, 475, 625, 1513, 1615, 1691, 2125, 2225, 2375, 7565, 8075, 8455, 10625, 11125, 11875, 28747, 37825, 40375, 42275, 55625, 143735, 189125, 201875, 211375, 718675, 945625, 1056875, 3593375, 17966875]

約数ペア:

[(1, 17966875), (5, 3593375), (17, 1056875), (19, 945625), (25, 718675), (85, 211375), (89, 201875), (95, 189125), (125, 143735), (323, 55625), (425, 42275), (445, 40375), (475, 37825), (625, 28747), (1513, 11875), (1615, 11125), (1691, 10625), (2125, 8455), (2225, 8075), (2375, 7565)]