1990171744

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{31237}}^1$

素因数の和:31439

約数の個数: 48

約数和(自身を含む): 4298098896

約数和(自身を除く): 2307927152

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 181, 352, 362, 724, 1448, 1991, 2896, 3982, 5792, 7964, 15928, 31237, 31856, 62474, 63712, 124948, 249896, 343607, 499792, 687214, 999584, 1374428, 2748856, 5497712, 5653897, 10995424, 11307794, 22615588, 45231176, 62192867, 90462352, 124385734, 180924704, 248771468, 497542936, 995085872, 1990171744]

約数ペア:

[(1, 1990171744), (2, 995085872), (4, 497542936), (8, 248771468), (11, 180924704), (16, 124385734), (22, 90462352), (32, 62192867), (44, 45231176), (88, 22615588), (176, 11307794), (181, 10995424), (352, 5653897), (362, 5497712), (724, 2748856), (1448, 1374428), (1991, 999584), (2896, 687214), (3982, 499792), (5792, 343607), (7964, 249896), (15928, 124948), (31237, 63712), (31856, 62474)]