399158944

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{307}}^1\times {\mathrm{991}}^1$

素因数の和:1349

約数の個数: 48

約数和(自身を含む): 808448256

約数和(自身を除く): 409289312

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 164, 307, 328, 614, 656, 991, 1228, 1312, 1982, 2456, 3964, 4912, 7928, 9824, 12587, 15856, 25174, 31712, 40631, 50348, 81262, 100696, 162524, 201392, 304237, 325048, 402784, 608474, 650096, 1216948, 1300192, 2433896, 4867792, 9735584, 12473717, 24947434, 49894868, 99789736, 199579472, 399158944]

約数ペア:

[(1, 399158944), (2, 199579472), (4, 99789736), (8, 49894868), (16, 24947434), (32, 12473717), (41, 9735584), (82, 4867792), (164, 2433896), (307, 1300192), (328, 1216948), (614, 650096), (656, 608474), (991, 402784), (1228, 325048), (1312, 304237), (1982, 201392), (2456, 162524), (3964, 100696), (4912, 81262), (7928, 50348), (9824, 40631), (12587, 31712), (15856, 25174)]