2156025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 4017600

約数和(自身を除く): 1861575

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 75, 85, 89, 95, 255, 267, 285, 323, 425, 445, 475, 969, 1275, 1335, 1425, 1513, 1615, 1691, 2225, 4539, 4845, 5073, 6675, 7565, 8075, 8455, 22695, 24225, 25365, 28747, 37825, 42275, 86241, 113475, 126825, 143735, 431205, 718675, 2156025]

約数ペア:

[(1, 2156025), (3, 718675), (5, 431205), (15, 143735), (17, 126825), (19, 113475), (25, 86241), (51, 42275), (57, 37825), (75, 28747), (85, 25365), (89, 24225), (95, 22695), (255, 8455), (267, 8075), (285, 7565), (323, 6675), (425, 5073), (445, 4845), (475, 4539), (969, 2225), (1275, 1691), (1335, 1615), (1425, 1513)]