128491525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 176774400

約数和(自身を除く): 48282875

約数列:

[1, 5, 17, 25, 43, 79, 85, 89, 215, 395, 425, 445, 731, 1075, 1343, 1513, 1975, 2225, 3397, 3655, 3827, 6715, 7031, 7565, 16985, 18275, 19135, 33575, 35155, 37825, 57749, 65059, 84925, 95675, 119527, 175775, 288745, 302333, 325295, 597635, 1443725, 1511665, 1626475, 2988175, 5139661, 7558325, 25698305, 128491525]

約数ペア:

[(1, 128491525), (5, 25698305), (17, 7558325), (25, 5139661), (43, 2988175), (79, 1626475), (85, 1511665), (89, 1443725), (215, 597635), (395, 325295), (425, 302333), (445, 288745), (731, 175775), (1075, 119527), (1343, 95675), (1513, 84925), (1975, 65059), (2225, 57749), (3397, 37825), (3655, 35155), (3827, 33575), (6715, 19135), (7031, 18275), (7565, 16985)]