21194512

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1163}}^1$

素因数の和:1255

約数の個数: 40

約数和(自身を含む): 44166816

約数和(自身を除く): 22972304

約数列:

[1, 2, 4, 8, 16, 17, 34, 67, 68, 134, 136, 268, 272, 536, 1072, 1139, 1163, 2278, 2326, 4556, 4652, 9112, 9304, 18224, 18608, 19771, 39542, 77921, 79084, 155842, 158168, 311684, 316336, 623368, 1246736, 1324657, 2649314, 5298628, 10597256, 21194512]

約数ペア:

[(1, 21194512), (2, 10597256), (4, 5298628), (8, 2649314), (16, 1324657), (17, 1246736), (34, 623368), (67, 316336), (68, 311684), (134, 158168), (136, 155842), (268, 79084), (272, 77921), (536, 39542), (1072, 19771), (1139, 18608), (1163, 18224), (2278, 9304), (2326, 9112), (4556, 4652)]