21388208

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:369

約数の個数: 40

約数和(自身を含む): 42705600

約数和(自身を除く): 21317392

約数列:

[1, 2, 4, 8, 16, 59, 118, 139, 163, 236, 278, 326, 472, 556, 652, 944, 1112, 1304, 2224, 2608, 8201, 9617, 16402, 19234, 22657, 32804, 38468, 45314, 65608, 76936, 90628, 131216, 153872, 181256, 362512, 1336763, 2673526, 5347052, 10694104, 21388208]

約数ペア:

[(1, 21388208), (2, 10694104), (4, 5347052), (8, 2673526), (16, 1336763), (59, 362512), (118, 181256), (139, 153872), (163, 131216), (236, 90628), (278, 76936), (326, 65608), (472, 45314), (556, 38468), (652, 32804), (944, 22657), (1112, 19234), (1304, 16402), (2224, 9617), (2608, 8201)]