251691728

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{11801}}^1$

素因数の和:11883

約数の個数: 40

約数和(自身を含む): 515133696

約数和(自身を除く): 263441968

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 1333, 2666, 5332, 10664, 11801, 21328, 23602, 47204, 94408, 188816, 365831, 507443, 731662, 1014886, 1463324, 2029772, 2926648, 4059544, 5853296, 8119088, 15730733, 31461466, 62922932, 125845864, 251691728]

約数ペア:

[(1, 251691728), (2, 125845864), (4, 62922932), (8, 31461466), (16, 15730733), (31, 8119088), (43, 5853296), (62, 4059544), (86, 2926648), (124, 2029772), (172, 1463324), (248, 1014886), (344, 731662), (496, 507443), (688, 365831), (1333, 188816), (2666, 94408), (5332, 47204), (10664, 23602), (11801, 21328)]