256741225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1499}}^1$

素因数の和:1570

約数の個数: 48

約数和(自身を含む): 374976000

約数和(自身を除く): 118234775

約数列:

[1, 5, 13, 17, 25, 31, 65, 85, 155, 221, 325, 403, 425, 527, 775, 1105, 1499, 2015, 2635, 5525, 6851, 7495, 10075, 13175, 19487, 25483, 34255, 37475, 46469, 97435, 127415, 171275, 232345, 331279, 487175, 604097, 637075, 789973, 1161725, 1656395, 3020485, 3949865, 8281975, 10269649, 15102425, 19749325, 51348245, 256741225]

約数ペア:

[(1, 256741225), (5, 51348245), (13, 19749325), (17, 15102425), (25, 10269649), (31, 8281975), (65, 3949865), (85, 3020485), (155, 1656395), (221, 1161725), (325, 789973), (403, 637075), (425, 604097), (527, 487175), (775, 331279), (1105, 232345), (1499, 171275), (2015, 127415), (2635, 97435), (5525, 46469), (6851, 37475), (7495, 34255), (10075, 25483), (13175, 19487)]